How To Fix AQV150 - The field & has already been assigned to table &

SAP Error Message - Details

• Message type: E = Error

• Message class: AQV - Message texts for SAP Query

• Message number: 150

• Message text: The field & has already been assigned to table &

What causes this issue?

You tried to maintain an additional field that was already defined, but
you chose a different table assignment in the logical database than in
the original definition of the additional field.

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?

If you want to change the definition of the additional field without
changing the assignment to the database table, define the correct
database table.
If you want to assign the additional field to a different database
table, you must first delete the additional field and then define it
again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQV150 - The field & has already been assigned to table & ?

  The SAP error message AQV150, which states "The field & has already been assigned to table &," typically occurs during the process of data modeling or when working with database tables in the ABAP Dictionary. This error indicates that there is an attempt to assign a field to a table that has already been assigned to another table, which is not allowed.
  Cause:
  
  Field Reassignment: The field you are trying to assign to a new table is already associated with another table in the Data Dictionary.
  Duplicate Field Definitions: There may be duplicate definitions of the same field in different tables, leading to conflicts.
  Incorrect Table Structure: The structure of the table may not be defined correctly, causing issues when trying to assign fields.
  
  Solution:
  
  Check Field Assignments: Review the Data Dictionary (transaction SE11) to check which tables the field is currently assigned to. Ensure that the field is not already in use by another table.
  Modify Field Usage: If the field is indeed assigned to another table and you need it in the new table, consider creating a new field with a different name or modifying the existing table structure to accommodate your needs.
  Remove Redundant Assignments: If the field is no longer needed in the original table, you can remove its assignment from that table before assigning it to the new table.
  Use Data Elements: If applicable, consider using data elements instead of directly assigning fields. Data elements can be reused across multiple tables without causing conflicts.
  Check for Transport Issues: If this error occurs after a transport, ensure that the transport did not cause any inconsistencies in the Data Dictionary.
  
  Related Information:
  
  Transaction Codes: Use SE11 (Data Dictionary) to view and modify table definitions and field assignments.
  Documentation: Refer to SAP Help documentation for more details on Data Dictionary management and field assignments.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If the error persists, consider debugging the program or transaction that is causing the error to identify the exact point of failure.
  
  By following these steps, you should be able to resolve the AQV150 error and successfully manage your field assignments in SAP.