How To Fix RAP_RUNTIME021 - References across implementation frameworks not supported: &1, ref. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RAP_RUNTIME - RAP Runtime Messages

• Message number: 021

• Message text: References across implementation frameworks not supported: &1, ref. &2

Self-Explanatory Message

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• What is the cause and solution for SAP error message RAP_RUNTIME021 - References across implementation frameworks not supported: &1, ref. &2 ?

  The SAP error message RAP_RUNTIME021 indicates that there is an issue with references across different implementation frameworks in the context of the RAP (Rapid Application Programming) model. This error typically arises when you are trying to create a reference between two entities that are implemented in different frameworks, which is not supported.
  
  Cause:
  
  Cross-Framework References: The error occurs when you attempt to reference an entity from one implementation framework (e.g., a behavior definition) in another framework (e.g., a different behavior definition or a different service).
  Incompatible Entity Types: The entities involved may not be compatible due to differences in their implementation or lifecycle management.
  Incorrect Configuration: There may be a misconfiguration in the way the entities are defined or how they are intended to interact.
  
  
  Solution:
  
  Check Entity Definitions: Review the definitions of the entities involved in the reference. Ensure that they are defined within the same implementation framework.
  Refactor Code: If the entities must interact, consider