How To Fix /IWBEP/CM_V4_MED311 - Entity Type specific Complex Type '&1' has a complex collection

/IWBEP/CM_V4_MED311 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 311

• Message text: Entity Type specific Complex Type '&1' has a complex collection

Self-Explanatory Message

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/IWBEP/CM_V4_MED311 - Details

• The SAP error message /IWBEP/CM_V4_MED311 indicates that there is an issue with an entity type that has a complex collection in the context of OData services. This error typically arises when the OData service is trying to process a complex type that contains a collection of other complex types, which is not supported in the way it is being used.
  
  Cause:
  
  Complex Collection: The entity type defined in the OData service has a property that is a complex type, and that complex type itself contains a collection of another complex type. This can lead to issues in serialization and deserialization processes.
  Model Definition: The OData model may not be correctly defined to handle complex collections. This can happen if the metadata is not properly set up or if there are inconsistencies in the data model.
  Service Implementation: The implementation of the OData service may not be handling the complex collections correctly, leading to this