Message type: E = Error
Message class:  CNV_20800 - Message class for CNV_20800 
Message number: 181
Message text: Participating customers have different Customer group (KNVV-KDGRP)
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20800181 indicates that there is a mismatch in the customer group (field KNVV-KDGRP) between participating customers during a data migration or conversion process. This error typically arises in scenarios involving data transfer, such as during a system upgrade, data migration, or when using SAP's Customer Migration tools.
Cause: The error occurs when: Two or more customer records that are being processed have different values in the customer group field (KNVV-KDGRP). The system expects that participating customers should have the same customer group for the operation to proceed, but it finds discrepancies.
Solution: To resolve this error, you can take the following steps: Identify the Customers: Determine which customer records are causing the issue. You may need to check the logs or the specific data set being processed to find the customers with differing customer groups. Standardize Customer Groups: If the customer groups should be the same, update the records to ensure that all participating
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_20800180 Participating customers have different Billing block (KNVV-FAKSD)
 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 reco...
CNV_20800179 Check for account group:
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_20800182 Participating customers have different Credit control area (KNVV-KKBER)
 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 reco...
CNV_20800183 Participating customers have different Delivery block (KNVV-LIFSD)
 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 reco...
Click on this link to search all SAP messages.