How To Fix CL_RAP_OPXY_EDMX_MSG030 - Row can contain only one level index. Duplicate: row=&; level=&; index=&;

SAP Error Message - Details

• Message type: E = Error

• Message class: CL_RAP_OPXY_EDMX_MSG -

• Message number: 030

• Message text: Row can contain only one level index. Duplicate: row=&; level=&; index=&;

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_MSG030 - Row can contain only one level index. Duplicate: row=&; level=&; index=&; ?

  The SAP error message CL_RAP_OPXY_EDMX_MSG030 typically occurs in the context of the RAP (Rapid Application Programming) model when there is an issue with the structure of the data being processed, particularly when dealing with nested data structures or collections.
  Cause:
  The error message indicates that there is a problem with the indexing of rows in a nested structure. Specifically, it suggests that the system has encountered a situation where a row is trying to contain multiple levels of indexing, which is not allowed. This can happen in scenarios where:
  
  Duplicate Entries: There are duplicate entries in a collection or nested structure that violate the expected single-level index.
  Incorrect Data Structure: The data being processed does not conform to the expected structure defined in the EDMX (Entity Data Model XML) file.
  Improper Mapping: There may be issues with how the data is mapped or transformed, leading to conflicts in indexing.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Structure: Review the data structure being processed to ensure it adheres to the expected format. Make sure that each row only contains a single level index.
  
  
  Remove Duplicates: If duplicates are present, identify and remove them from the data set. Ensure that the data being passed to the RAP service does not contain duplicate entries that could lead to this error.
  
  
  Review EDMX Configuration: Check the EDMX file for the definitions of the entities and their relationships. Ensure that the relationships are correctly defined and that the data being processed matches these definitions.
  
  
  Debugging: Use debugging tools to trace the data flow and identify where the issue arises. Look for the specific row and level mentioned in the error message to pinpoint the source of the problem.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for additional insights or similar issues encountered by other users.
  
  
  Testing: After making changes, test the application to ensure that the error is resolved and that the data is processed correctly.
  
  
  Related Information:
  
  RAP Model: The RAP model is designed to simplify the development of business applications in SAP. Understanding its principles and how it handles data structures is crucial for troubleshooting.
  EDMX Files: These files define the data model and relationships in an SAP application. Familiarity with how to read and modify these files can be beneficial.
  SAP Community: Engaging with the SAP Community can provide additional support and insights from other developers who may have faced similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.