How To Fix ACM_SYNTAX183 - To-be-protected entity &1 cannot inherit from itself (indefinite cycle!)

SAP Error Message - Details

• Message type: E = Error

• Message class: ACM_SYNTAX - ACM: DCL Syntax Error Messages

• Message number: 183

• Message text: To-be-protected entity &1 cannot inherit from itself (indefinite cycle!)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACM_SYNTAX183 - To-be-protected entity &1 cannot inherit from itself (indefinite cycle!) ?

  The SAP error message ACM_SYNTAX183 indicates that there is an issue with the inheritance structure of entities in the system. Specifically, it means that an entity is trying to inherit from itself, which creates an indefinite cycle. This situation is not allowed in object-oriented programming and can lead to logical inconsistencies.
  Cause:
  The error typically arises in the following scenarios:
  
  Incorrect Inheritance Definition: An entity (like a class or a business object) is defined to inherit from itself, either directly or indirectly through another entity.
  Misconfiguration: There may be a misconfiguration in the inheritance hierarchy, where the relationships between entities are not set up correctly.
  Copy-Paste Errors: Sometimes, during the development or configuration process, entities may be incorrectly copied or modified, leading to self-referential inheritance.
  
  Solution:
  To resolve the ACM_SYNTAX183 error, you can take the following steps:
  
  
  Review Inheritance Structure:
  
  Check the inheritance hierarchy of the entity that is causing the error. Ensure that it does not directly or indirectly inherit from itself.
  Use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to analyze the structure.
  
  
  
  Modify Inheritance Relationships:
  
  If you find that the entity is incorrectly set to inherit from itself, modify the inheritance relationship to point to a valid parent entity that does not create a cycle.
  Ensure that all related entities in the hierarchy are correctly defined.
  
  
  
  Check for Indirect Cycles:
  
  Sometimes, the cycle may not be direct. Check if there are other entities in the hierarchy that might be causing an indirect cycle.
  
  
  
  Testing:
  
  After making changes, test the configuration to ensure that the error is resolved and that the inheritance structure works as intended.
  
  
  
  Documentation:
  
  Document the changes made to the inheritance structure for future reference and to help prevent similar issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Best Practices: Follow best practices for designing inheritance structures in SAP to avoid such issues in the future.
  
  By carefully reviewing and correcting the inheritance structure, you should be able to resolve the ACM_SYNTAX183 error and ensure that your entities are properly configured.