How To Fix CL_RAP_OPXY_EDMX_MSG029 - Type & of element & is not allowed for key properties.

SAP Error Message - Details

• Message type: E = Error

• Message class: CL_RAP_OPXY_EDMX_MSG -

• Message number: 029

• Message text: Type & of element & is not allowed for key properties.

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 CL_RAP_OPXY_EDMX_MSG029 - Type & of element & is not allowed for key properties. ?

  The SAP error message CL_RAP_OPXY_EDMX_MSG029 indicates that there is an issue with the key properties defined in your RAP (Rapid Application Programming) model. Specifically, the error states that the type of a certain element is not allowed for key properties. This typically occurs when the data type of a key property does not conform to the expected types defined in the RAP framework.
  Cause:
  
  Incorrect Data Type: The key property is defined with a data type that is not supported as a key in the RAP model. For example, certain complex types or non-primitive types may not be allowed.
  Model Definition Issues: There may be inconsistencies or errors in the way the RAP model is defined, particularly in the metadata or annotations.
  Incompatible Annotations: The annotations used in the definition of the entity might not align with the expected structure for key properties.
  
  Solution:
  
  Check Data Types: Review the data types of the key properties in your RAP model. Ensure that they are of primitive types (e.g., Integer, String, etc.) that are allowed as key properties.
  Review Model Definition: Go through the entity definition in your RAP model and ensure that all key properties are correctly defined and that there are no typos or misconfigurations.
  Adjust Annotations: If you are using annotations, verify that they are correctly applied and compatible with the key properties.
  Refer to Documentation: Consult the SAP documentation for RAP to understand the requirements and restrictions regarding key properties and their data types.
  Testing: After making changes, test the model again to see if the error persists.
  
  Related Information:
  
  RAP Model: The RAP framework is designed to simplify the development of business applications in SAP. Understanding its structure and requirements is crucial for effective development.
  Data Types in ABAP: Familiarize yourself with the data types supported in ABAP and their usage in RAP models.
  SAP Notes and Community: Check SAP Notes for any known issues or updates related to this error. The SAP Community forums can also be a valuable resource for troubleshooting and solutions shared by other developers.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message CL_RAP_OPXY_EDMX_MSG029.