How To Fix CNV_20900183 - Participating vendors have different Posting block (LFA1-SPERR)

CNV_20900183 - Overview

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 183

• Message text: Participating vendors have different Posting block (LFA1-SPERR)

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 Central posting block. (This setting is
determined by the indicator<ZH> 'Central posting block' , </>field
<ZH>LFA1-SPERR</>).
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 Central posting block 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.

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_20900183 - Details

• The SAP error message CNV_20900183 indicates that there is a discrepancy in the posting block settings for participating vendors in the system. Specifically, the error arises when you are trying to perform a transaction that involves multiple vendors, and these vendors have different posting block statuses defined in the vendor master data (table LFA1).
  
  Cause:
  The error occurs due to the following reasons:
  
  Different Posting Block Settings: The participating vendors have different values in the SPERR field (Posting Block) in the vendor master data (LFA1 table). This field determines whether a vendor is blocked for posting transactions.
  Data Migration or Integration Issues: If you are migrating data or integrating systems, inconsistencies in vendor master data can lead to this error.
  Manual Changes: Manual changes to vendor master data that result in different posting block statuses can also trigger this error.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Vendor Master Data:
  
  Go to transaction code