How To Fix DD_MT_SHARING_CHK015 - &1 unique index(es) found (uniqueness not ensured for sharing type W/T/S)

SAP Error Message - Details

• Message type: E = Error

• Message class: DD_MT_SHARING_CHK - DDIC Multi Tenancy Sharing: Messages

• Message number: 015

• Message text: &1 unique index(es) found (uniqueness not ensured for sharing type W/T/S)

What causes this issue?

Unique constraint cannot be ensured because shared tables with type W, T
or S involve a UNION view.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DD_MT_SHARING_CHK015 - &1 unique index(es) found (uniqueness not ensured for sharing type W/T/S) ?

  The SAP error message DD_MT_SHARING_CHK015 indicates that there are unique indexes found in the database that are not ensured for sharing types W (Write), T (Table), or S (Shared). This typically occurs in the context of data model sharing in SAP, particularly when dealing with database tables and their indexes.
  
  Cause:
  The error arises when the system detects that there are unique indexes defined on a table, but the sharing type of the table does not ensure uniqueness. This can happen in scenarios where:
  
  Data Model Configuration: The data model is incorrectly configured, leading to a mismatch between the defined unique indexes and the sharing type.
  Table Design: The table design may not have been properly aligned with the intended use cases, leading to potential data integrity issues.
  Database Constraints: There may be constraints in the database that are not being respected due to the sharing type settings.
  
  
  Solution:
  To resolve this error, you can take the