How To Fix TQ050 - RFC error when calling function module SUBST_EVAL_TABLE_SIZE

SAP Error Message - Details

• Message type: E = Error

• Message class: TQ - SAPup Messages

• Message number: 050

• Message text: RFC error when calling function module SUBST_EVAL_TABLE_SIZE

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message TQ050 - RFC error when calling function module SUBST_EVAL_TABLE_SIZE ?

  The SAP error message TQ050, which indicates an RFC (Remote Function Call) error when calling the function module SUBST_EVAL_TABLE_SIZE, typically arises due to issues in communication between the SAP systems or problems with the function module itself. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP systems involved in the RFC call.
  Authorization Issues: The user executing the function may not have the necessary authorizations to call the function module.
  Function Module Issues: The function module SUBST_EVAL_TABLE_SIZE may have been modified or may not be properly activated.
  System Configuration: Incorrect configuration of the RFC destination or the target system may lead to this error.
  Resource Limitations: The target system may be experiencing resource limitations (e.g., memory, CPU) that prevent it from processing the request.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the systems. You can use tools like ping or traceroute to diagnose connectivity.
  Verify Authorizations: Check the user authorizations for the user executing the function module. Ensure that the user has the necessary permissions to perform the operation.
  Check Function Module: Verify that the function module SUBST_EVAL_TABLE_SIZE is active and has not been modified incorrectly. You can do this by checking in transaction SE37.
  Review RFC Destination: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that it is correctly set up and that the connection test is successful.
  Monitor System Resources: Check the target system for any resource limitations. Use transaction ST02 (buffer management) and ST06 (OS monitoring) to monitor system performance.
  Check Logs: Review the system logs (transaction SM21) and the RFC trace (transaction SM58) for any additional error messages or clues that could help diagnose the issue.
  
  Related Information:
  
  
  Transaction Codes:
  
  SE37: Function Module Maintenance
  SM59: RFC Destinations
  SM21: System Log
  ST02: Tune Buffers
  ST06: Operating System Monitor
  SM58: Asynchronous RFC Monitor
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Documentation: Review the documentation for the function module SUBST_EVAL_TABLE_SIZE to understand its parameters and expected behavior.
  
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the steps you have already taken.