How To Fix CNV_20200_CHECK099 - There are critical differences in the customer master data

CNV_20200_CHECK099 - Overview

• Message type: E = Error

• Message class: CNV_20200_CHECK - Messages for check functions (company code merge)

• Message number: 099

• Message text: There are critical differences in the customer master data

What causes this issue?

There are critical differences in the customer master data.

System Response

Warning, with action required

How to fix this error?

The customer master records should be harmonized before the merge.
Choose the <ZK>Details</> pushbutton in each message to see which master
records have differences. The field "not exists" in the listed table
means, that there is no entry found for the reference company code. In
this case, you should create an entry to ensure that the system uses the
settings from the reference company code.

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.

CNV_20200_CHECK099 - Details

• The SAP error message CNV_20200_CHECK099 indicates that there are critical differences in the customer master data during a data migration or conversion process. This error typically arises in the context of SAP S/4HANA migrations or data transfers where customer master data is being validated against certain criteria.
  
  Cause:
  The error is usually caused by discrepancies in the customer master data that violate the expected structure or rules defined in the migration process. Common causes include:
  
  Inconsistent Data: Differences in customer data between the source and target systems, such as missing fields, incorrect formats, or invalid entries.
  Data Mapping Issues: Problems with how customer data is mapped from the legacy system to the new system.
  Missing Required Fields: Certain mandatory fields in the customer master data may not be populated.
  Duplicate Entries: The presence of duplicate customer records that need to be resolved before migration.
  Data Validation Rules: The data may not meet specific validation rules set in