How To Fix /IWBEP/SBOD440 - Nullable flag of artifacts in Referential Constraint does not match

/IWBEP/SBOD440 - Overview

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 440

• Message text: Nullable flag of artifacts in Referential Constraint does not match

Self-Explanatory Message

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/IWBEP/SBOD440 - Details

• The SAP error message /IWBEP/SBOD440 Nullable flag of artifacts in Referential Constraint does not match typically occurs in the context of OData services and is related to the definition of referential constraints in the underlying data model. This error indicates that there is a mismatch in the nullable properties of the entities involved in a referential constraint.
  
  Cause:
  
  
  Mismatched Nullable Flags: The error arises when the nullable property of the foreign key in the child entity does not match the nullable property of the primary key in the parent entity. For example, if the primary key in the parent entity is defined as non-nullable, but the foreign key in the child entity is defined as nullable, this inconsistency will trigger the error.
  
  
  Data Model Definition Issues: This can also occur due to inconsistencies in the data model definitions, such as when the OData service is generated from an underlying database schema that has