How To Fix PO771 - Cannot generate control file (RFC1179)

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 771

• Message text: Cannot generate control file (RFC1179)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PO771 - Cannot generate control file (RFC1179) ?

  The SAP error message PO771, which states "Cannot generate control file (RFC1179)," typically occurs during the process of generating a control file for a purchase order (PO) or during the execution of a related function. This error is often associated with issues in the configuration or setup of the system, particularly in the context of Remote Function Calls (RFC).
  Causes:
  
  
  RFC Connection Issues: The error may arise if there are problems with the RFC connection to the target system. This could be due to network issues, incorrect configuration, or the target system being down.
  
  
  Authorization Issues: The user executing the transaction may not have the necessary authorizations to generate the control file.
  
  
  Configuration Errors: There may be issues in the configuration of the output types or the settings related to the purchase order processing.
  
  
  Missing or Incorrect Data: If the purchase order data is incomplete or incorrect, it may lead to the inability to generate the control file.
  
  
  System Bugs or Limitations: There could be bugs in the SAP system or limitations in the version being used that affect the generation of control files.
  
  
  Solutions:
  
  
  Check RFC Connections: Verify the RFC connections in transaction SM59. Ensure that the connections are correctly configured and that the target system is reachable.
  
  
  Review Authorizations: Ensure that the user has the necessary authorizations to perform the action that is generating the error. This may involve checking roles and profiles assigned to the user.
  
  
  Validate Configuration: Review the configuration settings for output types related to purchase orders. Ensure that all necessary settings are correctly defined.
  
  
  Check Purchase Order Data: Review the purchase order for any missing or incorrect data. Ensure that all required fields are filled out correctly.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve the issue.
  
  
  System Logs: Review system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), and ME23N (Display Purchase Order) to navigate through the purchase order processes.
  Documentation: Review SAP documentation related to purchase order processing and output management for additional insights.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the PO771 error in your SAP system.