How To Fix CNV_20800157 - Participating customers have different Posting block (KNA1-SPERR)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 157

• Message text: Participating customers have different Posting block (KNA1-SPERR)

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>Posting block</>. (This
is determined by the indicator <ZK>Posting block</>, field KNA1-SPERR).
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>Posting block</> 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_20800157 - Participating customers have different Posting block (KNA1-SPERR) ?

  The SAP error message CNV_20800157 indicates that there is a discrepancy in the posting block settings for customer master records across different participating customers in a system, specifically related to the field KNA1-SPERR (which represents the posting block indicator for customer master records).
  Cause:
  The error typically arises during data migration or integration processes where multiple customer records are being processed. The posting block (SPERR) is a field that can restrict postings to a customer account. If one customer has a posting block set (e.g., it is marked as blocked for postings), while another customer does not, the system will raise this error to prevent inconsistencies in the data.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Customer Master Records:
  
  Use transaction code SE16N or SE11 to view the KNA1 table and check the SPERR field for the relevant customer records.
  Identify which customers have the posting block set and which do not.
  
  
  
  Align Posting Block Settings:
  
  If the posting block is not required for certain customers, you can remove the block by updating the SPERR field to allow postings.
  If the posting block is necessary for compliance or business rules, ensure that all participating customers have the same posting block status.
  
  
  
  Data Migration Adjustments:
  
  If this error occurs during a data migration process, ensure that the data being migrated is consistent regarding the posting block settings.
  You may need to adjust the data in your source system or transformation logic to ensure that all relevant customer records have the same posting block status.
  
  
  
  Consult Documentation:
  
  Review any relevant SAP documentation or notes related to the CNV_20800157 error for additional context or specific instructions.
  
  
  
  Testing:
  
  After making the necessary adjustments, re-run the process that triggered the error to confirm that the issue has been resolved.
  
  
  
  Related Information:
  
  KNA1 Table: This table contains general data for customers. The SPERR field is crucial for determining whether postings can be made to a customer account.
  Transaction Codes: Familiarize yourself with transaction codes like XD01 (Create Customer), XD02 (Change Customer), and XD03 (Display Customer) to manage customer master data effectively.
  SAP Notes: Check for any SAP Notes that may provide additional insights or patches related to this error message.
  
  By following these steps, you should be able to resolve the CNV_20800157 error and ensure that your customer master data is consistent across the participating customers.