How To Fix >6551 - Internal error: Unexpected exception in function module &1

SAP Error Message - Details

• Message type: E = Error

• Message class: >6 - Purchasing Document

• Message number: 551

• Message text: Internal error: Unexpected exception in function module &1

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message >6551 - Internal error: Unexpected exception in function module &1 ?

  The SAP error message 6551: Internal error: Unexpected exception in function module &1 indicates that an unexpected exception has occurred in a specific function module. This type of error is typically related to issues within the SAP system, such as coding errors, data inconsistencies, or problems with the configuration.
  Causes:
  
  Coding Errors: There may be a bug or unhandled exception in the function module that is being called.
  Data Issues: Inconsistent or corrupt data being processed by the function module can lead to unexpected exceptions.
  Configuration Problems: Incorrect configuration settings in the system can cause certain function modules to fail.
  System Bugs: There may be known bugs in the version of SAP you are using that affect the function module.
  Authorization Issues: Lack of proper authorizations can sometimes lead to unexpected behavior in function modules.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address the specific function module or error message. SAP frequently releases patches and updates to fix known issues.
  Debugging: If you have access to the development environment, you can debug the function module to identify the exact point of failure and the data being processed.
  Data Validation: Ensure that the data being passed to the function module is valid and consistent. Check for any anomalies in the data.
  Review Configuration: Verify that the configuration settings related to the function module are correct and align with the business process requirements.
  Check Authorizations: Ensure that the user executing the function has the necessary authorizations to perform the action.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the function module name and any relevant context.
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes like ST22 (Dump Analysis) or SLG1 (Application Log) to gather more information about the error and its context.
  System Logs: Review system logs for any additional error messages or warnings that may provide more insight into the issue.
  Function Module Documentation: Look up the documentation for the specific function module to understand its expected behavior and any prerequisites.
  
  By following these steps, you should be able to diagnose and potentially resolve the error message you are encountering in SAP.