How To Fix DDLS166 - Currently, only unmanaged associations are supported

DDLS166 - Overview

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 166

• Message text: Currently, only unmanaged associations are 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS166 - Currently, only unmanaged associations are supported ?

  The SAP error message DDLS166 ("Currently, only unmanaged associations are supported") typically occurs in the context of Data Definition Language (DDL) operations, particularly when working with Core Data Services (CDS) views or when trying to define associations in a way that is not supported by the system.
  
  Cause:
  The error arises when you attempt to create or use managed associations in a context where only unmanaged associations are allowed. Managed associations are those that are automatically handled by the framework, while unmanaged associations require manual handling of the relationships between entities.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Association Definition: Review the definition of your associations in the CDS view or the data model. Ensure that you are using unmanaged associations if the context requires it.
  
  
  Change Association Type: If you are currently using managed associations, consider changing them to unmanaged associations. This typically involves defining the association without the automatic