How To Fix /IWBEP/CM_V4_MED278 - Navigation properties in complex types must not specify a partner

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 278

• Message text: Navigation properties in complex types must not specify a partner

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED278 - Navigation properties in complex types must not specify a partner ?

  The SAP error message /IWBEP/CM_V4_MED278 indicates that there is an issue with the definition of navigation properties in complex types within your OData service. Specifically, the error states that navigation properties in complex types should not specify a partner. This typically occurs when you are trying to define a navigation property in a complex type that is incorrectly configured.
  
  Cause:
  
  Incorrect Definition: The navigation property in a complex type is defined with a partner, which is not allowed. Navigation properties in complex types should not have a partner because they are not meant to represent relationships like those in entity types.
  Model Configuration: The OData model might be incorrectly configured, leading to this error when the service is being generated or accessed.
  
  
  Solution:
  To resolve this error, you need to check the definition of your complex types and ensure that navigation properties do not specify a partner. Here are the steps to fix the issue:
  
  
  Review