How To Fix CNV_20800165 - Participating customers have different Posting block (KNB1-SPERR)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 165

• Message text: Participating customers have different Posting block (KNB1-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
KNB1-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_20800165 - Participating customers have different Posting block (KNB1-SPERR) ?

  The SAP error message CNV_20800165 indicates that there is a discrepancy in the posting blocks (SPERR) for participating customers in a data migration or conversion process. This error typically arises during the execution of a data migration project, particularly when using SAP's Customer Migration tools or during the conversion of legacy data into the SAP system.
  Cause:
  The error occurs when:
  
  Two or more customer records (in table KNB1) have different posting blocks set. The posting block (SPERR) is a field that indicates whether a customer account is blocked for posting transactions.
  The migration process expects all participating customers to have the same posting block status, but finds inconsistencies.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Affected Customers:
  
  Use transaction codes like SE16 or SE11 to check the KNB1 table for the customers involved in the migration.
  Look for the SPERR field to identify which customers have different posting block statuses.
  
  
  
  Standardize Posting Blocks:
  
  Decide on a uniform posting block status that should apply to all participating customers.
  Update the KNB1 records to ensure that all relevant customers have the same SPERR value. This can be done through:
  
  Direct database updates (if you have the necessary authorizations and understand the implications).
  Using transaction code XD02 to change the customer master data manually.
  Running a mass update program if there are many records to change.
  
  
  
  
  
  Re-run the Migration Process:
  
  After standardizing the posting blocks, re-run the migration or conversion process to see if the error persists.
  
  
  
  Check for Other Related Issues:
  
  If the error continues, ensure that there are no other discrepancies in customer data that could be causing issues.
  Review the migration logs for additional error messages or warnings that may provide further insights.
  
  
  
  Related Information:
  
  SPERR Field: This field in the KNB1 table indicates whether a customer account is blocked for posting. Common values include:
  
  Blank: No posting block
  'X': Blocked for posting
  
  
  Transaction Codes:
  
  SE16: Data Browser to view table contents.
  XD02: Change customer master data.
  
  
  Migration Tools: If you are using SAP S/4HANA Migration Cockpit or other migration tools, refer to the specific documentation for handling customer data migration.
  
  Best Practices:
  
  Always back up data before making bulk changes.
  Test changes in a development or quality assurance environment before applying them in production.
  Document any changes made to customer records for future reference and auditing purposes.
  
  By following these steps, you should be able to resolve the CNV_20800165 error and successfully complete your data migration process.