How To Fix CNV20201116 - &: no master table, but there are external number ranges

CNV20201116 - Overview

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 116

• Message text: &: no master table, but there are external number ranges

What causes this issue?

In table CNV_20201_NR_OBJ, field TABNAME for the number range object is
empty.
There is no master table for the number range object, that is there is
no table which contains all numbers for the number range and from which
the current number level can be determined.
Besides, there are external number ranges for this object.

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

System Response

It is not possible to determine the current number range for the
external number ranges for this object.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

CNV20201116 - Details

• The SAP error message CNV20201116 &: no master table, but there are external number ranges typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is expecting a master table for a specific object, but it cannot find one, even though there are external number ranges defined.
  
  Cause:
  
  Missing Master Data Table: The system is looking for a master data table that should contain the relevant records, but it is not found in the database.
  External Number Ranges: The presence of external number ranges suggests that the system is configured to use external numbering for certain objects, but without a corresponding master table, the system cannot process these records.
  
  Configuration Issues: There may be configuration issues in the system that prevent the proper linking of number ranges to master data tables.
  Data Migration Issues: If you are migrating data from