How To Fix DT377 - For GTTs, no inverted individual primary key is possible

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 377

• Message text: For GTTs, no inverted individual primary key is possible

What causes this issue?

You have defined a Global Temporary Table (GTT) and are attempting to
create the primary key with the property Inverted Hash.

System Response

The table will not be activated. A GTT exists in the HANA database in
Row Store; the property Inverted Hash for primary keys, however, is only
supported for tables in Column Store.

How to fix this error?

You cannot use the property Inverted Hash for a GTT.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT377 - For GTTs, no inverted individual primary key is possible ?

  The SAP error message DT377, which states "For GTTs, no inverted individual primary key is possible," typically occurs in the context of Global Temporary Tables (GTTs) in SAP. This error indicates that there is an issue with the definition of the primary key for a Global Temporary Table, specifically regarding the use of inverted individual primary keys.
  Cause:
  
  Inverted Individual Primary Key: The error arises when you attempt to define a primary key for a Global Temporary Table in a way that is not supported by SAP. Inverted individual primary keys are not allowed for GTTs because they can lead to ambiguity in data retrieval and management.
  Table Definition: The structure of the GTT may have been defined incorrectly, or there may be an attempt to use a key that is not compatible with the GTT's intended use.
  
  Solution:
  
  Review Table Definition: Check the definition of the Global Temporary Table. Ensure that the primary key is defined correctly and does not use inverted individual keys.
  Modify Key Structure: If you have defined an inverted individual primary key, consider changing it to a standard primary key structure that is compatible with GTTs.
  Consult Documentation: Refer to SAP documentation or help resources for guidelines on defining primary keys for Global Temporary Tables. This can provide insights into the correct syntax and structure.
  Testing: After making changes, test the table definition to ensure that the error is resolved and that the table behaves as expected.
  
  Related Information:
  
  Global Temporary Tables (GTTs): These are special types of tables in SAP that store data temporarily for the duration of a session or transaction. They are useful for managing session-specific data without affecting the main database.
  Primary Key Constraints: Understanding how primary keys work in SAP and the restrictions associated with GTTs is crucial. Primary keys must uniquely identify records in a table, and their structure must comply with SAP's requirements.
  SAP Notes and Community: Check SAP Notes for any specific patches or updates related to this error. The SAP Community forums can also be a valuable resource for finding solutions from other users who have encountered similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.