How To Fix ISLM_API635 - Errors occurred while checking the where-used list for the class of PS &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ISLM_API - API Messages

• Message number: 635

• Message text: Errors occurred while checking the where-used list for the class of PS &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ISLM_API635 - Errors occurred while checking the where-used list for the class of PS &1 ?

  The SAP error message ISLM_API635 indicates that there were errors encountered while checking the "where-used list" for a specific class in the Project System (PS) module. This error typically arises when there are issues related to the class or its dependencies in the system.
  Causes:
  
  Missing or Incomplete Data: The class specified may not have all the necessary data or dependencies defined in the system.
  Authorization Issues: The user may not have the required authorizations to access certain objects or data related to the class.
  System Configuration Issues: There may be configuration issues in the Project System or related modules that prevent the where-used list from being generated correctly.
  Database Issues: There could be inconsistencies or corruption in the database that affect the retrieval of the where-used list.
  Transport Issues: If the class was recently transported from another system, there may be issues related to the transport that need to be resolved.
  
  Solutions:
  
  Check Class Definition: Verify that the class is correctly defined and that all necessary attributes and dependencies are in place.
  Authorization Check: Ensure that the user has the appropriate authorizations to access the class and its related objects.
  Rebuild Where-Used List: Sometimes, rebuilding the where-used list can resolve issues. This can be done through transaction codes like SE11 or SE80, depending on the object type.
  Check for Database Issues: Run database consistency checks to identify and resolve any inconsistencies that may be affecting the where-used list.
  Review Transport Logs: If the class was recently transported, check the transport logs for any errors or warnings that may indicate issues with the transport.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error message or provide guidance on troubleshooting.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) to investigate the class and its dependencies.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you suspect a bug or require deeper technical analysis.
  Documentation: Review SAP documentation related to the Project System and class management for additional insights and best practices.
  
  By following these steps, you should be able to identify the root cause of the ISLM_API635 error and implement a suitable solution.