Reference

System Actions

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OutSystems provides a set of System Actions that you can use when designing the Actions to define the business rules of your application.

Run System Actions the same way as any other Action in your module. System Actions are available in the Logic tab, under the System module within the Server Actions folder.

If you are developing a mobile app, along with the System Actions available at the server side, OutSystems provides you a set of System Actions to run at the client side. These Client Actions are available under the System module within the Client Actions folder.

Only a subset of the System Actions is added by default to your module. You can add other System Actions at any time by adding new dependencies from the System module.

Similarly to the Actions you design in your module, some Systems Actions are defined as functions, which you can use also within Expressions. They are available in the User Functions folder within the Scope Tree of the Expression Editor.

Summary

Server Action	Description	Is Function?
AbortTransaction	Issues a database ROLLBACK command that undoes all changes performed on the database since the last commit.
ActivityClose	Explicitly closes a Human Activity or a Wait Activity ending the execution. The the id of the next Human Activity in sequence is returned, if determined.
ActivityGetUrl	Returns the URL of the web screen where an activity will be carried out, once opened.	Yes
ActivityOpen	Explicitly forces a Human Activity instance to be opened in an end-user's Taskbox.
ActivityReset	Releases the Human Activity leaving it to be opened and carried out by another end-user.
ActivitySchedule	Schedules a date for the Human Activity to be available in the Taskbox.
ActivitySetGroup	Limit a Human Activity visibility and handling to end-users who belong to a specific group.
ActivitySkip	Explicitly skips the execution of a Human Activity or a Wait Activity. The the id of the next Human Activity in sequence is returned, if determined.
ActivityStart	Explicitly starts the execution of a ConditionalStart Activity.
ClientCertificateGetDetails	Gets the relevant information for the current request client certificate from the .NET framework.
ClientCertificateValue	Gets the value of a specific property of the client certificate in the .NET framework.
CommitTransaction	Issues a database COMMIT command that makes effective all changes done on the database since the last commit.
Deprecated_Notify	DEPRECATED: This action is deprecated because Events are now available for Web Blocks. Use Events in Web Blocks to propagate changes from a Web Block to the parent block. The way a web block has to notify a screen or web block using it. They handle the notification through the action set in their On Notify property. To retrieve a message sent with the notification, use the NotifyGetMessage function.
Deprecated_NotifyGetMessage	DEPRECATED: This action is deprecated because Events are now available for Web Blocks. Use Input Parameters in block Events to send information to the parent block when the Event is triggered. Returns the notification message sent by the Notify action.	Yes
Deprecated_NotifyWidget	The way a web block has to notify a screen or web block using it. They handle the notification through the action set in their On Notify property. To retrieve a message sent with the notification, use the NotifyGetMessage function.
EspaceInvalidateCache	Invalidates eSpace's specific caches across all Front-end servers and consumer eSpaces. Limit the invalidation to a single tenant by setting the tenant identifier.
GenerateGuid	Generates and returns a new GUID.	Yes
InboundSmsGetDetails	DEPRECATED: This action is deprecated because the SMS features are no longer available. Returns information about the inbound SMS that is currently being processed.
IntegratedSecurityCheckRole	Verifies whether the current Windows user has access to a specific role.	Yes
IntegratedSecurityGetDetails	Gets information about the current Windows user that made the request.
ListAll	Determines if all the elements in the list satisfy the given condition.
ListAny	Determines if any of the elements in the list satisfies the given condition.
ListAppend	Adds an element to the end of a list.
ListAppendAll	Adds the elements of the source list to the end of the destination list.
ListClear	Removes all elements from a list.
ListDistinct	Filters duplicate elements from a list.	Yes
ListDuplicate	Duplicates the elements of a list into another list.	Yes
ListFilter	Returns a new list with the elements from the List parameter satisfying the given condition.
ListIndexOf	Returns the position of the first element of the List parameter that satisfies the given condition, or -1 if no element satisfying the condition was found.
ListInsert	Inserts an element in a specific position of a list.
ListRemove	Removes an element from a specific position of a list.
ListSort	Sorts the elements of the List parameter by the given criteria. Note that ListSort is different from the dynamic sorting in Aggregates. Multiple attributes having different data types (such as Text and Integer) in the criteria may not sort the list correctly.
Login	Logs a specified user in the application. In case of success, 'UserId' and 'Username' session variables are filled with the user data.
LoginPassword	Logs a specified user in the application using a password. In case of success, 'UserId' and 'Username' session variables are filled with the user data.
LogMessage	Registers information that can be presented in Service Center in the module general log.
Logout	Logs out a specific user from the application. The 'UserId' and 'Username' session variables are cleared.
ProcessTerminate	Explicitly forces a Process to terminate its execution.
SetCurrentLocale	Sets the language locale of the user session to change the application presentation language.
TenantCreate	Creates a new tenant and associates it with the provisioning site.
TenantInvalidateCache	Invalidates tenant's specific caches across all Front-end servers and eSpaces. This action is now available for compatibility purposes only. Please use the EspaceInvalidateCache action instead and invalidate tenant's specific caches by eSpace to narrow the invalidation scope
TenantSwitch	Change the context to the given tenant identifier. When switching tenant, the session is cleared (equivalent to an implicit logout, before changing the tenant), the OnSessionStart actions are executed, and the current transaction is committed.

Client Action	Description	Is Function?
ListAll	Determines if all the elements in the list satisfy the given condition.
ListAny	Determines if any of the elements in the list satisfies the given condition.
ListAppend	Adds an element to the end of a list.
ListAppendAll	Adds the elements of the source list to the end of the destination list.
ListClear	Removes all elements from a list.
ListDistinct	Filters duplicate elements from a list.	Yes
ListDuplicate	Duplicates the elements of a list into another list.	Yes
ListFilter	Returns a new list with the elements from the List parameter satisfying the given condition.
ListIndexOf	Returns the position of the first element of the List parameter that satisfies the given condition, or -1 if no element satisfying the condition was found.
ListInsert	Inserts an element in a specific position of a list.
ListRemove	Removes an element from a specific position of a list.
ListSort	Sorts the elements of the List parameter by the given criteria. Note that ListSort is different from the dynamic sorting in Aggregates. Multiple attributes having different data types (such as Text and Integer) in the criteria may not sort the list correctly.
LogMessage	Registers information that can be presented in Service Center in the module general log.
RequireScript	Add a Javascript to the html header. Multiple calls for the same Javascript will only add it once. Action flow will proceed after the Javascript has been successfully loaded.

Server Actions

AbortTransaction

Issues a database ROLLBACK command that undoes all changes performed on the database since the last commit.

ActivityClose

Explicitly closes a Human Activity or a Wait Activity ending the execution.
The the id of the next Human Activity in sequence is returned, if determined.

Inputs

ActivityId: Type: mandatory, Activity Identifier.

Outputs

NextHumanActivityId: Type: Activity Identifier.

ActivityGetUrl

Returns the URL of the web screen where an activity will be carried out, once opened.

Inputs

ActivityId: Type: mandatory, Activity Identifier.

Outputs

HandlingUrl: Type: Text.

ActivityOpen

Explicitly forces a Human Activity instance to be opened in an end-user's Taskbox.

Inputs

ActivityId: Type: mandatory, Activity Identifier.

Outputs

HandlingUrl: Type: Text.

ActivityReset

Releases the Human Activity leaving it to be opened and carried out by another end-user.

Inputs

ActivityId: Type: mandatory, Activity Identifier.
ResetActivityUser: Type: mandatory, Boolean.

ActivitySchedule

Schedules a date for the Human Activity to be available in the Taskbox.

Inputs

ActivityId: Type: mandatory, Activity Identifier.
StartDate: Type: mandatory, Date Time.

ActivitySetGroup

Limit a Human Activity visibility and handling to end-users who belong to a specific group.

Inputs

ActivityId: Type: mandatory, Activity Identifier.
GroupId: Type: mandatory, Group Identifier.

ActivitySkip

Explicitly skips the execution of a Human Activity or a Wait Activity.
The the id of the next Human Activity in sequence is returned, if determined.

Inputs

ActivityId: Type: mandatory, Activity Identifier.

Outputs

NextHumanActivityId: Type: Activity Identifier.

ActivityStart

Explicitly starts the execution of a ConditionalStart Activity.

Inputs

ActivityId: Type: mandatory, Activity Identifier.

Outputs

NextHumanActivityId: Type: Activity Identifier.

ClientCertificateGetDetails

Gets the relevant information for the current request client certificate from the .NET framework.

Outputs

cookie: Type: Text.
Gets the unique Id for the client certificate, if provided.
flags: Type: Integer.
A set of flags that provide additional client certificate information. Bit0 is set to 1 if the client certificate is present. Bit1 is set to 1 if the Certificate Authority (CA) of the client certificate is not in the list of recognized CAs on the server.
isPresent: Type: Boolean.
Gets a value that indicates whether the client certificate is present.
issuer: Type: Text.
A string that contains a list of subfield values containing information about the certificate issuer.
isValid: Type: Boolean.
Gets a value that indicates whether the client certificate is valid.
serialNumber: Type: Text.
Provides the certificate serial number as an ASCII representation of hexadecimal bytes separated by hyphens. For example, 04-67-F3-02.
serverIssuer: Type: Text.
Gets the issuer field of the server certificate.
serverSubject: Type: Text.
Gets the subject field of the server certificate.
subject: Type: Text.
Gets the subject field of the client certificate.
validFrom: Type: Date Time.
Gets the date when the certificate becomes valid. The date varies with international settings.
validUntil: Type: Date Time.
Gets the certificate expiration date

ClientCertificateValue

Gets the value of a specific property of the client certificate in the .NET framework.

Inputs

key: Type: mandatory, Text.

Outputs

value: Type: Text.

CommitTransaction

Issues a database COMMIT command that makes effective all changes done on the database since the last commit.

Deprecated_Notify

DEPRECATED: This action is deprecated because Events are now available for Web Blocks. Use Events in Web Blocks to propagate changes from a Web Block to the parent block.

The way a web block has to notify a screen or web block using it. They handle the notification through the action set in their On Notify property. To retrieve a message sent with the notification, use the NotifyGetMessage function.

Inputs

Message: Type: optional, Text.

Deprecated_NotifyGetMessage

DEPRECATED: This action is deprecated because Events are now available for Web Blocks. Use Input Parameters in block Events to send information to the parent block when the Event is triggered.

Returns the notification message sent by the Notify action.

Outputs

Message: Type: Text.

Deprecated_NotifyWidget

Inputs

Message: Type: optional, Text.

EspaceInvalidateCache

Invalidates eSpace's specific caches across all Front-end servers and consumer eSpaces. Limit the invalidation to a single tenant by setting the tenant identifier.

Inputs

EspaceId: Type: optional, Espace Identifier.
Identifier of the eSpace to invalidate. If not specificed, the identifier of caller eSpace is used.
TenantId: Type: optional, Tenant Identifier.
Optional tenant identifier to limit the cache invalidation to a specific tenant.

GenerateGuid

Generates and returns a new GUID.

Outputs

Guid: Type: Text.

InboundSmsGetDetails

DEPRECATED: This action is deprecated because the SMS features are no longer available. Returns information about the inbound SMS that is currently being processed.

Outputs

MSISDN: Type: Phone Number.
LargeAccount: Type: Phone Number.
Message: Type: Text.
BinaryMessage: Type: Text.
UDH: Type: Text.
MessageId: Type: Text.
Priority: Type: Integer.
Encoding: Type: Text.
Connection: Type: Text.
OperatorCode: Type: Text.
Sent: Type: Date Time.
Custom1: Type: Text.
Custom2: Type: Text.
Custom3: Type: Text.

IntegratedSecurityCheckRole

Verifies whether the current Windows user has access to a specific role.

Inputs

RoleName: Type: mandatory, Text.

Outputs

Belongs: Type: Boolean.

IntegratedSecurityGetDetails

Gets information about the current Windows user that made the request.

Outputs

Username: Type: Text.
isGuest: Type: Boolean.
isSystem: Type: Boolean.
isAnonymous: Type: Boolean.
isAuthenticated: Type: Boolean.

ListAll

Determines if all the elements in the list satisfy the given condition.

Inputs

List: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

Result: Type: Boolean.
True if every element of the List satisfies the condition; otherwise, False.

ListAny

Determines if any of the elements in the list satisfies the given condition.

Inputs

List: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

Result: Type: Boolean.
True if there is an element of the List satisfying the condition; otherwise, False.

ListAppend

Adds an element to the end of a list.

Inputs

List: Type: mandatory, Generic Record List.
The list to add the element to.
Element: Type: mandatory, Generic Record.
The element to be added to the end of the list.

ListAppendAll

Adds the elements of the source list to the end of the destination list.

Inputs

List: Type: mandatory, Generic Record List.
The destination List.
SourceList: Type: mandatory, Generic Record List.
The list whose elements will be added.

ListClear

Removes all elements from a list.

Inputs

List: Type: mandatory, Generic Record List.
The list to remove the elements from.

ListDistinct

Filters duplicate elements from a list.

Inputs

SourceList: Type: mandatory, Generic Record List.
The list that includes duplicate elements.

Outputs

DistinctList: Type: Generic Record List.
List that only includes the distinct elements of the source list.

ListDuplicate

Duplicates the elements of a list into another list.

Inputs

SourceList: Type: mandatory, Generic Record List.
The list to duplicate.

Outputs

DuplicatedList: Type: Generic Record List.
The duplicate list.

ListFilter

Returns a new list with the elements from the List parameter satisfying the given condition.

Inputs

SourceList: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

FilteredList: Type: Generic Record List.
A new list with the elements that satisfy the condition.

ListIndexOf

Returns the position of the first element of the List parameter that satisfies the given condition, or -1 if no element satisfying the condition was found.

Examples

ListIndexOf(UserList, Is_Active)

Returns the position of the first user in the list of User records satisfying the condition Is_Active = True.

ListIndexOf(UserList, Name = "James")

Returns the position of the first user in the list of User records satisfying the condition Name = "James".

Inputs

List: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

Position: Type: Integer.
The position of the first element of the list that satisfies the given condition; -1 if no element satisfying the condition was found.

ListInsert

Inserts an element in a specific position of a list.

Inputs

List: Type: mandatory, Generic Record List.
The list to add the element to.
Element: Type: mandatory, Generic Record.
The element to insert in the list.
Position: Type: mandatory, Integer.
The position where the element is inserted.

ListRemove

Removes an element from a specific position of a list.

Inputs

List: Type: mandatory, Generic Record List.
The list that the element is removed from.
Position: Type: mandatory, Integer.
Position of the element to be removed.

ListSort

Sorts the elements of the List parameter by the given criteria. Note that ListSort is different from the dynamic sorting in Aggregates. Multiple attributes having different data types (such as Text and Integer) in the criteria may not sort the list correctly.

Examples

ListSort(UserList, Name)

Sorts UserList (list of User records) by the Name attribute.

ListSort(TextList, Value, False)

Sorts TextList (a list of text values) by Value in descending order. 
Value is the runtime property that represents the current Text value being sorted.

ListSort(OfficeEmployeesList, Employee.Name + " " + Office.Name)

Sorts OfficeEmployeesList (a list of Employee and Office records) by the employee name and office name. If employees work in multiple offices then this sorted list will have the employee records in the different offices displayed consecutively in ascending order of both their own names and the names of the offices.

Inputs

List: Type: mandatory, Any List.
The list that contains the elements to sort by the given criteria.
By: Type: mandatory, Any Data Type.
The criteria by which to order the elements of the list.
Ascending: Type: optional, Boolean.
The boolean expression to indicate if the elements are sorted ascending (True) or descending (False) according to the By parameter. The default value is ascending (True).

Logs a specified user in the application.
In case of success, 'UserId' and 'Username' session variables are filled with the user data.

Inputs

UserId: Type: mandatory, User Identifier.
Persistent: Type: mandatory, Boolean.
If true, the login will be persistent for 15 days

LoginPassword

Logs a specified user in the application using a password.
In case of success, 'UserId' and 'Username' session variables are filled with the user data.

Inputs

UserId: Type: mandatory, User Identifier.
Password: Type: mandatory, Text.
Persistent: Type: mandatory, Boolean.
If true, the login will be persistent for 15 days

LogMessage

Registers information that can be presented in Service Center in the module general log.

Inputs

Message: Type: mandatory, Text.
The message to add to the module general log.
ModuleName: Type: mandatory, Text.
The name of the module to be associated with the log message.

Logout

Logs out a specific user from the application.
The 'UserId' and 'Username' session variables are cleared.

ProcessTerminate

Explicitly forces a Process to terminate its execution.

Inputs

ProcessId: Type: mandatory, Process Identifier.

SetCurrentLocale

Sets the language locale of the user session to change the application presentation language.

Inputs

Locale: Type: mandatory, Text.

TenantCreate

Creates a new tenant and associates it with the provisioning site.

Inputs

eSpaceName: Type: mandatory, Text.
TenantName: Type: mandatory, Text.

Outputs

TenantId: Type: Tenant Identifier.

TenantInvalidateCache

Invalidates tenant's specific caches across all Front-end servers and eSpaces. This action is now available for compatibility purposes only. Please use the EspaceInvalidateCache action instead and invalidate tenant's specific caches by eSpace to narrow the invalidation scope

Inputs

TenantId: Type: mandatory, Tenant Identifier.
Identifier of the tenant which will have all of its specific caches invalidated.

TenantSwitch

Change the context to the given tenant identifier. When switching tenant, the session is cleared (equivalent to an implicit logout, before changing the tenant), the OnSessionStart actions are executed, and the current transaction is commited.

Inputs

TenantId: Type: mandatory, Tenant Identifier.

Client Actions

ListAll

Determines if all the elements in the list satisfy the given condition.

Inputs

List: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

Result: Type: Boolean.
True if every element of the List satisfies the condition; otherwise, False.

ListAny

Determines if any of the elements in the list satisfies the given condition.

Inputs

List: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

Result: Type: Boolean.
True if there is an element of the List satisfying the condition; otherwise, False.

ListAppend

Adds an element to the end of a list.

Inputs

List: Type: mandatory, Generic Record List.
The list to add the element to.
Element: Type: mandatory, Generic Record.
The element to be added to the end of the list.

ListAppendAll

Adds the elements of the source list to the end of the destination list.

Inputs

List: Type: mandatory, Generic Record List.
The list to add the element to.
SourceList: Type: mandatory, Generic Record List.
The list whose elements will be added.

ListClear

Removes all elements from a list.

Inputs

List: Type: mandatory, Generic Record List.
The list to remove the elements from.

ListDistinct

Filters duplicate elements from a list.

Inputs

SourceList: Type: mandatory, Generic Record List.
The list that includes duplicate elements.

Outputs

DistinctList: Type: Generic Record List.
List that only includes the distinct elements of the source list.

ListDuplicate

Duplicates the elements of a list into another list.

Inputs

SourceList: Type: mandatory, Generic Record List.
The list to duplicate.

Outputs

DuplicatedList: Type: Generic Record List.
The duplicate list.

ListFilter

Returns a new list with the elements from the List parameter satisfying the given condition.

Inputs

SourceList: Type: mandatory, Generic Record List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

FilteredList: Type: Generic Record List.
A new list with the elements that satisfy the condition.

ListIndexOf

Returns the position of the first element of the List parameter that satisfies the given condition, or -1 if no element satisfying the condition was found.

Examples

ListIndexOf(UserList, Is_Active)

Returns the position of the first user in the list of User records satisfying the condition Is_Active = True.

ListIndexOf(UserList, Name = "James")

Returns the position of the first user in the list of User records satisfying the condition Name = "James".

Inputs

List: Type: mandatory, Any List.
The list that contains the elements to which to apply the condition.
Condition: Type: mandatory, Boolean.
The boolean expression to check for on each element of the list.

Outputs

Position: Type: Integer.
The position of the first element of the list that satisfies the given condition; -1 if no element satisfying the condition was found.

ListInsert

Inserts an element in a specific position of a list.

Inputs

List: Type: mandatory, Generic Record List.
The list to add the element to.
Element: Type: mandatory, Generic Record.
The element to insert in the list.
Position: Type: mandatory, Integer.
The position where the element is inserted.

ListRemove

Removes an element from a specific position of a list.

Inputs

List: Type: mandatory, Generic Record List.
The list that the element is removed from.
Position: Type: mandatory, Integer.
Position of the element to be removed.

ListSort

Examples

ListSort(UserList, Name)

Sorts UserList (list of User records) by the Name attribute.

ListSort(TextList, Value, False)

Sorts TextList (a list of text values) by Value in descending order. 
Value is the runtime property that represents the current Text value being sorted.

ListSort(OfficeEmployeesList, Employee.Name + " " + Office.Name)

Sorts OfficeEmployeesList (a list of Employee and Office records) by the employee name and office name. If employees work in multiple offices then this sorted list will have the employee records in the different offices displayed consecutively in ascending order of both their own names and the names of the offices.

Inputs

List: Type: mandatory, Any List.
The list that contains the elements to sort by the given criteria.
By: Type: mandatory, Any Data Type.
The criteria by which to order the elements of the list.
Ascending: Type: optional, Boolean.
The boolean expression to indicate if the elements are sorted ascending (True) or descending (False) according to the By parameter. The default value is ascending (True).

LogMessage

Registers information that can be presented in Service Center in the module general log.

Inputs

Message: Type: mandatory, Text.
The message to add to the module general log.
ModuleName: Type: mandatory, Text.
The name of the module to be associated with the log message.

RequireScript

Add a Javascript to the html header. Multiple calls for the same Javascript will only add it once. Action flow will proceed after the Javascript has been successfully loaded.

Inputs

Url: Type: mandatory, Text.
The Url of the Javascript to add to the header