How To Fix CNV_20900189 - Participating vendors have different Block key for payment (LFB1-ZAHLS)

CNV_20900189 - Overview

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 189

• Message text: Participating vendors have different Block key for payment (LFB1-ZAHLS)

Diagnosis
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 Block key for payment. (This setting is
determined by the indicator 'Block key for payment', field
<ZH>LFB1-ZAHLS</>).
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.
Procedure
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 Block key for payment of the old vendor record for which the
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.

CNV_20900189 - Details

• The SAP error message CNV_20900189 indicates that there is a discrepancy in the payment block key (LFB1-ZAHLS) for participating vendors during a data migration or conversion process. This error typically arises when multiple vendors involved in a transaction or process have different payment block settings, which can lead to inconsistencies in payment processing.
  
  Cause:
  
  Different Payment Block Keys: The participating vendors have different values for the payment block key (LFB1-ZAHLS) in the vendor master data. This can happen if the vendors were set up with different payment terms or conditions.
  Data Migration Issues: If you are migrating data from one system to another, inconsistencies in vendor master data can lead to this error.
  
  Configuration Issues: There may be configuration settings in the SAP system that are not aligned, leading to different payment block keys being assigned to vendors.
  
  
  Solution:
  
  
  Check Vendor Master Data: Review the vendor master data for all participating vendors. Ensure that the payment