How To Fix DA166 - Schema &1 defined more than once in program &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 166

• Message text: Schema &1 defined more than once in program &2

What causes this issue?

A scheme was already defined with the same name.

System Response

The last definition is used for instantiation.

How to fix this error?

Remove the obsolete versions of the scheme from the scheme program.

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 DA166 - Schema &1 defined more than once in program &2 ?

  The SAP error message DA166 indicates that a schema (in this case, identified as &1) has been defined more than once in a specific program (identified as &2). This typically occurs in the context of payroll processing or other areas where schemas are used to define rules and calculations.
  Cause:
  
  
  Duplicate Schema Definition: The most common cause of this error is that the same schema has been defined multiple times within the same program or in the same context. This can happen due to:
  
  Copying and pasting code without removing duplicates.
  Incorrect configuration or setup in the system.
  Multiple includes or function modules that define the same schema.
  
  
  
  Incorrect Program Logic: Sometimes, the program logic may inadvertently lead to the same schema being called or defined multiple times.
  
  
  Solution:
  
  
  Check Schema Definitions: Review the program code to identify where the schema is defined. Look for duplicate entries and remove or comment out the redundant definitions.
  
  
  Use Unique Names: If you need to define similar schemas, ensure that they have unique names to avoid conflicts.
  
  
  Review Includes and Function Modules: If the program includes other modules or includes, check those as well to ensure that the schema is not being defined in multiple places.
  
  
  Debugging: If the error persists, use debugging tools to trace the execution of the program and identify where the duplicate definition is being triggered.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific program or schema you are working with for any known issues or guidelines.
  
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes like SE80 (Object Navigator) or SE38 (ABAP Editor) to find and edit the program in question.
  SAP Notes: Search for relevant SAP Notes that might address this specific error or provide additional context.
  Testing: After making changes, thoroughly test the program to ensure that the error is resolved and that the program functions as expected.
  
  If you continue to experience issues, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more tailored assistance based on your specific environment and configuration.