How To Fix SWF_EVT030 - Receiver function module '&' not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EVT - Messages from Event Manager

• Message number: 030

• Message text: Receiver function module '&' not allowed

What causes this issue?

Execute a function module via RFC could be a security issue. To prevent
misusage of tRFC calls we have established a white list check. All
function modules which are registered in SWE2 (type linkage) are part of
the white list.
Note: Type linkage settings (SWE2) are authority protected.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Register event and function module in SWE2. Then it can be used.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EVT030 - Receiver function module '&' not allowed ?

  The SAP error message SWF_EVT030, which states "Receiver function module '&' not allowed," typically occurs in the context of workflow management in SAP. This error indicates that the function module specified in the workflow is not permitted to be executed as a receiver function module. Here are some details regarding the cause, potential solutions, and related information:
  Cause:
  
  Function Module Restrictions: The function module specified may not be defined as a valid receiver function module in the workflow configuration. SAP has certain restrictions on which function modules can be used as receivers.
  Incorrect Configuration: The workflow may be incorrectly configured, leading to the use of a function module that is not intended for the specific workflow scenario.
  Authorization Issues: The user executing the workflow may not have the necessary authorizations to execute the specified function module.
  Missing or Inactive Function Module: The function module may not exist in the system, or it may be inactive.
  
  Solutions:
  
  Check Function Module: Verify that the function module specified in the workflow is valid and is intended to be used as a receiver. You can do this by checking the function module in transaction SE37.
  Workflow Configuration: Review the workflow configuration in transaction SWDD (Workflow Builder) to ensure that the correct function module is being used and that it is properly configured.
  Authorization Check: Ensure that the user executing the workflow has the necessary authorizations to call the function module. You can check this in transaction SU53 or by reviewing the user's roles and authorizations.
  Use Allowed Function Modules: If the function module is not allowed, consider using an alternative function module that is permitted for use as a receiver in workflows.
  Debugging: If the issue persists, you may need to debug the workflow to identify the exact point of failure and gather more information about the context in which the error occurs.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to workflow errors and the specific function module you are using. SAP Notes often provide insights into known issues and their resolutions.
  Workflow Documentation: Review SAP documentation on workflows to understand the requirements and restrictions for function modules used in workflows.
  Community Forums: Consider searching or posting in SAP community forums or SAP support channels for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the SWF_EVT030 error and implement a suitable solution.