How To Fix DD_MT_SHARING020 - All lines of a normalized where condition must use the same key fields.

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 020

• Message text: All lines of a normalized where condition must use the same key fields.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DD_MT_SHARING020 - All lines of a normalized where condition must use the same key fields. ?

  The SAP error message DD_MT_SHARING020 indicates that there is an issue with a normalized WHERE condition in a database operation, typically when working with database views or queries in ABAP. This error occurs when the WHERE condition in a query does not consistently use the same key fields across all lines. 
  Cause:
  The error is caused by the following scenarios:
  
  Inconsistent Key Fields: The WHERE condition is constructed using different key fields across its lines. For example, if one line uses field1 and another line uses field2, this inconsistency leads to the error.
  Normalization Issues: The database structure expects a normalized form where all conditions should refer to the same set of key fields to ensure data integrity and proper joins.
  Incorrect Query Construction: The query might have been constructed incorrectly, leading to a mismatch in the key fields used in the WHERE clause.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Review the WHERE Condition: Check the WHERE condition in your query or view definition. Ensure that all lines of the condition use the same key fields. For example, if you are filtering based on field1, all conditions should reference field1.
  
  
  Modify the Query: If you find that different key fields are being used, modify the query to ensure consistency. For example:
  WHERE field1 = value1 AND field1 = value2
  should be changed to use the same field consistently.
  
  
  Check Database Structure: Ensure that the underlying database tables and views are designed correctly and that the key fields are properly defined.
  
  
  Test the Query: After making changes, test the query to ensure that it executes without errors and returns the expected results.
  
  
  Consult Documentation: If you are unsure about the key fields or the structure of the database, consult the SAP documentation or your database schema to understand the relationships and key definitions.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message.
  ABAP Documentation: Review ABAP documentation for best practices in constructing queries and using WHERE conditions.
  Database Design Principles: Familiarize yourself with database normalization principles to avoid similar issues in the future.
  
  By ensuring that all lines of a normalized WHERE condition use the same key fields, you can resolve the DD_MT_SHARING020 error and maintain the integrity of your database operations.