Message type: E = Error
Message class:  CNV_20800 - Message class for CNV_20800 
Message number: 207
Message text: Participating customers have different Block key for payment (KNB1-ZAHLS)
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
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 Block key for payment. (This
is determined by the indicator Block key for payment, field KNB1-ZAHLS).
This may lead to inconsistencies in some applications related to target
customer data.
<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
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 Block key for payment 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 - before you continue with the conversion.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20800207 indicates that there is a discrepancy in the payment block key (field KNB1-ZAHLS) for participating customers during a data migration or conversion process. This error typically arises in scenarios where customer master data is being migrated from one system to another, and the payment block key for the customers involved does not match.
Cause: Inconsistent Data: The primary cause of this error is that the participating customers have different values for the payment block key in the source system. This inconsistency can occur due to: Different configurations or settings in the source systems. Manual data entry errors. Data being extracted from multiple sources with varying definitions of the payment block key. Data Migration Issues: If the data migration process is not correctly mapping the payment block keys, it can lead to this error.
Solution: To resolve the error, you can take the following steps: Identify the Customers: Determine which customers are causing the issue
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