How To Fix CNV_20900054 - Participating vendors have different Tax Number 1 (LFA1-STCD1)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 054

• Message text: Participating vendors have different Tax Number 1 (LFA1-STCD1)

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

What causes this issue?

According to the mapping, you want to merge two or more old vendor
records into one target vendor record. However, not all the old records
have identical master data settings: It was found that old vendor
records have different 'Tax Number 1'. (This is determined by the
indicator 'Tax Number1', field LFA1-STCD1).
This may lead to inconsistencies in some applications related to target
vendor 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 vendor records have been made.
The respective vendor records are not used any longer and are meant to
be merged into a dummy record.

How to fix this error?

Analyze the situation, and either change the mapping so that only vendor
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 vendor record
will get the Tax Number1 of the old vendor record for which priority the
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.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20900054 - Participating vendors have different Tax Number 1 (LFA1-STCD1) ?

  The SAP error message CNV_20900054 indicates that there is a discrepancy in the Tax Number 1 (LFA1-STCD1) for participating vendors during a data migration or conversion process. This error typically arises in scenarios where multiple vendors are being processed, and the system detects that the tax numbers do not match for the vendors involved in a particular transaction or operation.
  Cause:
  
  
  Data Inconsistency: The primary cause of this error is that the participating vendors have different values for the Tax Number 1 field (LFA1-STCD1). This can happen if:
  
  The vendors are incorrectly set up in the system.
  There are duplicate vendor entries with different tax numbers.
  The data being migrated or converted contains inconsistencies.
  
  
  
  Configuration Issues: There may be configuration settings in the SAP system that enforce strict validation rules for tax numbers, leading to this error when the rules are not met.
  
  
  Solution:
  To resolve the error CNV_20900054, you can take the following steps:
  
  
  Verify Vendor Data:
  
  Check the vendor master data for the participating vendors to ensure that the Tax Number 1 (LFA1-STCD1) is correctly maintained.
  Look for any discrepancies or duplicates in the vendor records.
  
  
  
  Correct Inconsistencies:
  
  If you find that the tax numbers are indeed different and should be the same, update the vendor records to ensure consistency.
  If there are duplicates, determine which vendor record is correct and consolidate the data as necessary.
  
  
  
  Data Migration Review:
  
  If this error occurs during a data migration process, review the source data for inconsistencies before migration.
  Ensure that the mapping of tax numbers is correctly defined in the migration tool or process.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or best practices to follow.
  
  
  
  Engage with SAP Support:
  
  If the issue persists after checking the data and configurations, consider reaching out to SAP support for further assistance. They may provide insights specific to your version or configuration of SAP.
  
  
  
  Related Information:
  
  LFA1 Table: The vendor master data is stored in the LFA1 table. You can query this table to check the tax numbers for the vendors involved.
  Tax Number Fields: Familiarize yourself with other related fields in the vendor master data that may also affect tax reporting and compliance.
  Data Migration Tools: If you are using specific SAP tools for data migration (like SAP S/4HANA Migration Cockpit), refer to the tool's documentation for handling vendor data and tax numbers.
  
  By following these steps, you should be able to identify and resolve the cause of the error CNV_20900054 effectively.