How To Fix SRT_TW021 - Exception '&1' received from function module '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_TW - Watcher Administration

• Message number: 021

• Message text: Exception '&1' received from function module '&2'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_TW021 - Exception '&1' received from function module '&2' ?

  The SAP error message SRT_TW021 indicates that an exception has been received from a function module during a web service call. This error typically occurs in the context of SAP's web services and integration scenarios, particularly when using the SAP Process Integration (PI) or SAP Process Orchestration (PO) frameworks.
  Cause:
  The error message SRT_TW021 Exception '&1' received from function module '&2' generally indicates that an exception occurred in the specified function module (&2) while processing a web service request. The specific exception (&1) can provide more context about what went wrong. Common causes for this error include:
  
  Business Logic Errors: The function module may have encountered a business logic error, such as invalid input data or a violation of business rules.
  Technical Errors: There may be issues with the underlying technical setup, such as missing configuration, incorrect mapping, or connectivity problems.
  Authorization Issues: The user or service account executing the function may not have the necessary authorizations to perform the requested operation.
  Data Issues: The data being processed may be incomplete, incorrect, or in an unexpected format.
  
  Solution:
  To resolve the SRT_TW021 error, you can follow these steps:
  
  Check the Exception Details: Look at the specific exception message (&1) to understand the nature of the error. This can provide insights into what went wrong.
  Review the Function Module: Investigate the function module (&2) that is causing the error. Check its implementation for any known issues or exceptions that could be raised.
  Analyze Input Data: Ensure that the input data being sent to the function module is valid and meets the expected format and business rules.
  Check Authorizations: Verify that the user or service account has the necessary authorizations to execute the function module.
  Debugging: If you have access to the system, consider debugging the function module to trace the execution flow and identify where the error occurs.
  Review Logs: Check the application logs (transaction SLG1) and the system logs (transaction SM21) for any additional error messages or warnings that could provide more context.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module and the web service being called for any known issues or updates.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE37 to view the function module, SLG1 for application logs, and SM21 for system logs.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues with the function module or the web service.
  Community Forums: Consider checking SAP Community forums or other online resources for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the SRT_TW021 error effectively.