How To Fix /PM0/ABP_MESSAGES166 - Error during check of maximum cardinality; see long text for details

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/ABP_MESSAGES -

• Message number: 166

• Message text: Error during check of maximum cardinality; see long text for details

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/ABP_MESSAGES166 - Error during check of maximum cardinality; see long text for details ?

  The SAP error message /PM0/ABP_MESSAGES166 typically indicates an issue related to the maximum cardinality check in the context of SAP's Advanced Business Application Programming (ABAP) or a specific module that deals with data modeling or configuration. This error often arises when the system detects that the number of instances of a certain entity exceeds the defined maximum cardinality constraints.
  Cause:
  
  
  Data Model Constraints: The error usually occurs when the data being processed violates the defined maximum cardinality constraints in the data model. For example, if a relationship is defined to allow a maximum of one instance (1:1) and the system is trying to create or process multiple instances, this error will be triggered.
  
  
  Configuration Issues: There may be misconfigurations in the settings of the relevant module or application that define how many instances of a particular entity can exist.
  
  
  Data Integrity Issues: There could be existing data in the system that violates the cardinality rules, leading to this error when new data is being processed.
  
  
  Solution:
  
  
  Review Data Model: Check the data model and the cardinality settings for the entities involved. Ensure that the maximum cardinality defined matches the expected data relationships.
  
  
  Data Cleanup: If there are existing records that violate the cardinality constraints, you may need to clean up the data. This could involve deleting or merging records to ensure compliance with the defined constraints.
  
  
  Adjust Configuration: If the cardinality settings are too restrictive for your business needs, consider adjusting them in the configuration settings of the relevant module.
  
  
  Consult Documentation: Refer to the long text of the error message for specific details that may provide additional context or guidance on resolving the issue.
  
  
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that the system behaves as expected.
  
  
  Related Information:
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE37 (Function Module) to investigate the data model and related objects.
  
  
  Debugging: If you have access to debugging tools, you can trace the execution to identify where the error is being triggered and gather more context about the data being processed.
  
  
  Community Forums: Consider reaching out to SAP community forums or support channels for additional 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 error and implement a suitable solution.