How To Fix DA649 - Primary key changed to inverted hash

DA649 - Overview

• Message type: E = Error

• Message class: DA - Dictionary: Compare, distribution, timer, instantiation

• Message number: 649

• Message text: Primary key changed to inverted hash

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.

DA649 - Details

• The SAP error message DA649, which states "Primary key changed to inverted hash," typically occurs in the context of database operations, particularly when dealing with hashed tables in ABAP (Advanced Business Application Programming). This error indicates that the primary key of a hashed table has been modified in a way that is not compatible with the existing hash structure, leading to potential data integrity issues.
  
  Cause:
  
  Modification of Primary Key: The primary key of a hashed table has been changed after the table was created. This can happen if the structure of the table is altered in a way that affects the hashing mechanism.
  Inconsistent Data: If the data in the table does not conform to the expected structure of the primary key, the system may revert to an inverted hash to maintain data integrity.
  Database Changes: Changes in the underlying database schema or data types that affect the hashed table can also lead