How To Fix /IWBEP/CM_V4_RUNTIME102 - Complex property has wrong multiplicity for the new message target

/IWBEP/CM_V4_RUNTIME102 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_RUNTIME -

• Message number: 102

• Message text: Complex property has wrong multiplicity for the new message target

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_RUNTIME102 - Complex property has wrong multiplicity for the new message target ?

  The SAP error message /IWBEP/CM_V4_RUNTIME102 indicates that there is a problem with the multiplicity of a complex property in an OData service. This error typically arises when the data model defined in the OData service does not match the expected structure or constraints defined in the service's metadata.
  
  Cause:
  
  
  Multiplicity Mismatch: The error usually occurs when the OData service expects a certain multiplicity (e.g., 0..1, 1..1, 0..n, 1..n) for a complex property, but the actual data being sent does not conform to this expectation. For example, if a complex type is defined to allow only one instance but the incoming message contains multiple instances, this error will be triggered.
  
  
  Incorrect Data Structure: The structure of the JSON or XML payload being sent to the OData service may not match the expected structure defined in the service's metadata. This can happen if the payload is incorrectly formatted or if it includes unexpected properties.
  
  
  Service Definition