How To Fix 30016 - Master record number & in line & already exists

30016 - Overview

• Message type: E = Error

• Message class: 30 - Service Master: Basic Data

• Message number: 016

• Message text: Master record number & in line & already exists

What causes this issue?

You wish to enter a master record with a number in the specified line.

System Response

A master record with this number already exists in the database.

How to fix this error?

If you still wish to enter the data in the current line, please choose
a different number as the key for the master record.

Error message extract from SAP system. Copyright SAP SE.

30016 - Details

• The SAP error message "30016 Master record number & in line & already exists" typically occurs when you are trying to create or update a master record (such as a vendor, customer, or material) that already exists in the system. This error indicates that the system has detected a duplicate entry based on the unique identifier (master record number) you are trying to use.
  
  Cause:
  
  Duplicate Entry: The most common cause is that the master record you are trying to create already exists in the database.
  Incorrect Data Entry: There may be a mistake in the data entry, such as using the wrong master record number or not realizing that a record with similar attributes already exists.
  Data Migration Issues: If you are migrating data from another system, there may be duplicates that were not cleaned up before the migration.
  
  
  Solution:
  
  Check for Existing Records: Before creating a new master record, check the database to see