How To Fix -5301 - Serialization error for object &. Expected counter & > & in IDoc

SAP Error Message - Details

• Message type: E = Error

• Message class: -5 -

• Message number: 301

• Message text: Serialization error for object &. Expected counter & > & in IDoc

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message -5301 - Serialization error for object &. Expected counter & > & in IDoc ?

  The SAP error message -5301, "Serialization error for object &. Expected counter & > & in IDoc," typically occurs when there is an issue with the serialization of IDocs (Intermediate Documents) in SAP. This error indicates that the system expected a certain sequence or counter value for the IDoc, but the actual value does not meet the expected criteria.
  Cause:
  
  
  Counter Mismatch: The error usually arises when the counter for the IDoc segments does not match the expected value. Each segment of an IDoc has a counter that indicates its sequence. If the counter is lower than expected, it suggests that segments may be missing or that there is a problem with the IDoc's structure.
  
  
  IDoc Corruption: The IDoc may be corrupted or improperly formatted, leading to serialization issues.
  
  
  Concurrent Processing: If multiple processes are trying to create or modify the same IDoc simultaneously, it can lead to inconsistencies in the counter values.
  
  
  Configuration Issues: Incorrect configuration in the IDoc processing settings or in the partner profiles can also lead to serialization errors.
  
  
  Solution:
  
  
  Check IDoc Structure: Review the IDoc structure to ensure that all segments are present and correctly formatted. You can use transaction WE02 or WE05 to analyze the IDoc.
  
  
  Reprocess IDoc: If the IDoc is found to be corrupted or incomplete, you may need to delete the problematic IDoc and reprocess it. Ensure that the source system sends the IDoc again.
  
  
  Review Application Logs: Check the application logs for any additional error messages or warnings that might provide more context about the issue.
  
  
  Adjust Configuration: If the issue is related to configuration, review the partner profiles and IDoc settings in transaction WE20 and ensure they are correctly set up.
  
  
  Monitor Concurrent Processes: If concurrent processing is suspected, monitor the processes that are creating or modifying IDocs to ensure they are not interfering with each other.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  Related Information:
  
  IDoc Types: Familiarize yourself with the specific IDoc type that is causing the error, as different IDoc types may have different structures and requirements.
  Transaction Codes: Use transaction codes like WE02 (Display IDoc), WE05 (IDoc List), and WE19 (Test tool for IDocs) for troubleshooting.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the serialization error and implement a solution to resolve it.