How To Fix SDME_DDT303 - Attribute &1 of object &2 is already in the view

SAP Error Message - Details

• Message type: E = Error

• Message class: SDME_DDT - DME: Dialog Design Tool Messages

• Message number: 303

• Message text: Attribute &1 of object &2 is already in the view

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 SDME_DDT303 - Attribute &1 of object &2 is already in the view ?

  The SAP error message SDME_DDT303 indicates that there is a problem with the data model in the context of the SAP Data Migration or Data Transfer process. Specifically, the error message states that an attribute (field) of a certain object is already present in the view, which can lead to conflicts or redundancy in the data structure.
  Cause:
  
  Duplicate Attributes: The most common cause of this error is that the same attribute is being defined multiple times within the same view or context. This can happen if the data model is not properly designed or if there are overlapping definitions.
  Incorrect Configuration: There may be an issue with the configuration of the data model, where attributes are not correctly mapped or defined.
  Data Model Changes: If there have been recent changes to the data model, such as adding new attributes or modifying existing ones, it may lead to conflicts with existing definitions.
  
  Solution:
  
  Review the Data Model: Check the data model configuration to identify where the duplicate attribute is defined. Look for the specific object and attribute mentioned in the error message.
  Remove Duplicates: If you find that the attribute is indeed defined multiple times, remove the duplicate definition or consolidate the attributes as necessary.
  Check Mappings: Ensure that the mappings for the data transfer or migration process are correctly set up and do not lead to conflicts.
  Test Changes: After making adjustments, test the data model to ensure that the error is resolved and that the data transfer or migration process works as expected.
  Consult Documentation: Refer to SAP documentation or support resources for guidance on best practices for data model design and configuration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Data Migration Tools: If you are using specific SAP tools for data migration (like SAP Data Services or SAP S/4HANA Migration Cockpit), consult the documentation for those tools for additional insights on handling data model errors.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.