How To Fix XC527 - Unknown error during retransfer to SAP APO

SAP Error Message - Details

• Message type: E = Error

• Message class: XC - Message Class for Core Interface

• Message number: 527

• Message text: Unknown error during retransfer to SAP APO

What causes this issue?

An error occurred in the retransfer of objects to SAP APO.

System Response

The retransfer is terminated.

How to fix this error?

Check additional messages in the postprocessing log and in the
application log in the ERP system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message XC527 - Unknown error during retransfer to SAP APO ?

  The SAP error message XC527, which indicates an "Unknown error during retransfer to SAP APO," typically arises in the context of data transfer between SAP ERP and SAP Advanced Planning and Optimization (APO) systems. This error can occur due to various reasons, including configuration issues, data inconsistencies, or communication problems between the systems.
  Possible Causes:
  
  Data Inconsistencies: There may be inconsistencies in the data being transferred, such as missing or incorrect master data (e.g., materials, vendors, etc.).
  Configuration Issues: Incorrect settings in the integration model or in the CIF (Core Interface) configuration can lead to errors during data transfer.
  Network Issues: Communication problems between the SAP ERP and APO systems, such as network outages or firewall restrictions, can cause transfer failures.
  Authorization Issues: The user or system may lack the necessary authorizations to perform the transfer.
  System Performance: High load on the system or performance issues can lead to timeouts or failures during data transfer.
  APO System Errors: There may be issues or errors within the APO system itself that prevent successful data processing.
  
  Solutions:
  
  Check Logs: Review the CIF logs and transaction logs in both the ERP and APO systems to identify any specific errors or warnings that can provide more context about the issue.
  Validate Data: Ensure that all master data and transactional data are consistent and correctly maintained in both systems. Check for missing or incorrect entries.
  Review Configuration: Verify the CIF configuration settings, including the integration model, to ensure they are correctly set up for the data being transferred.
  Network and Connectivity: Check the network connectivity between the ERP and APO systems. Ensure that there are no firewall or network issues preventing communication.
  User Authorizations: Ensure that the user or system account performing the transfer has the necessary authorizations to access and modify data in both systems.
  System Performance: Monitor system performance and consider optimizing the system or scheduling data transfers during off-peak hours to avoid load issues.
  APO System Check: Investigate the APO system for any errors or issues that may be affecting its ability to process incoming data.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like /SAPAPO/CIF to access CIF-related functions and logs.
  SAP Notes: Check SAP Notes for any known issues or patches related to the XC527 error. SAP frequently updates its knowledge base with solutions for common errors.
  Documentation: Refer to SAP documentation for detailed guidance on CIF configuration and troubleshooting.
  
  If the issue persists after following these steps, it may be beneficial to engage SAP support for further assistance, providing them with detailed logs and error messages to facilitate diagnosis.