How To Fix /IWBEP/CM_SBMC_MPC021 - Right End Cardinality is not specified for Association '&1'

/IWBEP/CM_SBMC_MPC021 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_SBMC_MPC -

• Message number: 021

• Message text: Right End Cardinality is not specified for Association '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_SBMC_MPC021 - Right End Cardinality is not specified for Association '&1' ?

  The SAP error message /IWBEP/CM_SBMC_MPC021 indicates that there is an issue with the definition of an association in your OData service model. Specifically, it states that the right end cardinality for an association is not specified. This typically occurs in the context of defining associations between entities in the OData service's metadata.
  
  Cause:
  
  Missing Cardinality Definition: The error arises when an association is defined between two entities, but the cardinality for the right end of the association is not specified. Cardinality defines how many instances of one entity can be associated with instances of another entity (e.g., one-to-one, one-to-many, many-to-many).
  Model Definition Issues: This can happen if the data model is not correctly defined in the ABAP code or if there are inconsistencies in the metadata definitions.
  
  
  Solution:
  To resolve this error, you need to ensure that the cardinality for the right end of the association is properly defined in your OData service model. Here