How To Fix DDLS393 - Extend & has further extend & as parent. This is not supported.

DDLS393 - Overview

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 393

• Message text: Extend & has further extend & as parent. This is not supported.

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.

DDLS393 - Details

• The SAP error message DDLS393 typically occurs during the process of extending a data element or domain in the ABAP Dictionary. The error indicates that the data element or domain you are trying to extend has a parent that also has extensions, which is not supported in the SAP system.
  
  Cause:
  
  Hierarchical Structure: In SAP, data elements and domains can have a hierarchical structure where a data element can inherit properties from a parent data element. If the parent data element itself has extensions, the system does not allow further extensions to maintain data integrity and avoid complex inheritance issues.
  Data Element/Domain Restrictions: SAP has specific rules regarding the extension of data elements and domains to prevent circular references and ensure that the data model remains manageable.
  
  
  Solution:
  
  
  Check Parent Data Element: Review the parent data element of the one you are trying to extend. If it has extensions, you will need to either:
  
  Avoid extending