How To Fix /IWBEP/SBOD122 - Principal Key '&1' for referential constraint must be a key property

/IWBEP/SBOD122 - Overview

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 122

• Message text: Principal Key '&1' for referential constraint must be a key property

Self-Explanatory Message

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/IWBEP/SBOD122 - Details

• The SAP error message /IWBEP/SBOD122 indicates that there is an issue with a principal key in a referential constraint within your OData service. Specifically, the error states that the principal key must be a key property, which means that the key you are trying to use in a relationship is not defined as a key in the entity type.
  
  Cause:
  
  Missing Key Property: The principal key you are trying to reference in a relationship is not defined as a key property in the entity type.
  Incorrect Configuration: The entity model may not be correctly configured, leading to a situation where the referential integrity cannot be maintained.
  Data Model Issues: There may be inconsistencies in the data model where the relationships between entities are not properly defined.
  
  
  Solution:
  
  
  Check Entity Definition: Ensure that the entity type you are referencing has the correct key properties defined. You can do this by checking the metadata of the OData service.
  
  Go