How To Fix CNV_20800159 - Participating customers have different VAT registration no. (KNA1-STCEG)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 159

• Message text: Participating customers have different VAT registration no. (KNA1-STCEG)

Diagnosis
According to the mapping, you want to merge two or more old customer
records into one target customer record. However, not all the old
records have identical master data settings: It was found that old
customer records have different values for <ZK>VAT registration no.</>.
(This is determined by the indicator <ZK>VAT registration no.</>, field
KNA1-STCEG).
This may lead to inconsistencies in some applications related to target
customer data.
System Response
<ZH>Error</>
From a technical perspective, this message can be ignored. This may make
sense in the following cases:
No postings to the respective customer records have been made.
The respective customer records are not used any longer and are meant to
be merged into a dummy record.
Procedure
Analyze the situation, and either change the mapping so that only
customer records with identical master data settings are merged, or
decide to ignore the message because one of the special cases described
above applies.
If you decide to ignore the error even though none of the special cases
described above applies, consider that <ZH>the target customer record
will get the <ZK>VAT registration no.</> of the old customer record for
which priority indicator is set.</> Make sure to evaluate the impact of
this decision - for example regarding potential inconsistencies and
required follow-up activities - <ZH>before</> you continue with the
conversion.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800159 - Participating customers have different VAT registration no. (KNA1-STCEG) ?

  The SAP error message CNV_20800159 indicates that there is a discrepancy in the VAT registration numbers (KNA1-STCEG) among participating customers during a data migration or conversion process. This error typically arises in scenarios where multiple customer records are being processed, and the system detects that the VAT registration numbers do not match as expected.
  Cause:
  
  
  Different VAT Registration Numbers: The primary cause of this error is that the participating customers have different VAT registration numbers, which may be due to:
  
  Incorrect data entry during the migration process.
  Existing discrepancies in the source data.
  Customers being incorrectly linked or associated in the system.
  
  
  
  Data Mapping Issues: If the data mapping rules are not correctly defined, it can lead to mismatches in the expected VAT registration numbers.
  
  
  Configuration Issues: There may be configuration settings in the SAP system that enforce certain rules regarding VAT registration numbers that are not being adhered to.
  
  
  Solution:
  
  
  Data Validation: 
  
  Review the source data for the participating customers to ensure that the VAT registration numbers are correct and consistent.
  Validate that the VAT registration numbers are correctly formatted and comply with the relevant tax regulations.
  
  
  
  Correct Data Entry: 
  
  If discrepancies are found, correct the VAT registration numbers in the source data before re-running the migration or conversion process.
  
  
  
  Mapping Configuration: 
  
  Check the data mapping configuration in the migration tool or process to ensure that it is set up correctly to handle VAT registration numbers.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or notes related to the specific migration or conversion process you are using to see if there are any additional steps or considerations regarding VAT registration numbers.
  
  
  
  Engage with SAP Support: 
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights specific to your version of SAP or the migration tool you are using.
  
  
  
  Related Information:
  
  KNA1 Table: The KNA1 table in SAP contains general data for customers, including the VAT registration number (STCEG). Understanding the structure and data in this table can help in troubleshooting.
  Data Migration Tools: If you are using a specific data migration tool (like SAP S/4HANA Migration Cockpit or SAP Data Services), check the documentation for any specific requirements or limitations regarding VAT registration numbers.
  Legal Compliance: Ensure that the VAT registration numbers comply with the legal requirements of the countries involved, as this can affect tax reporting and compliance.
  
  By addressing the discrepancies in VAT registration numbers and ensuring proper data mapping and validation, you should be able to resolve the error CNV_20800159.