How To Fix CNV_20800166 - Participating customers have different Dunning procedure (KNB5-MAHNA)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 166

• Message text: Participating customers have different Dunning procedure (KNB5-MAHNA)

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>Dunning procedure</>.
(This is determined by the indicator <ZK>Dunning procedure</>, field
KNB5-MAHNA).
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>Dunning procedure</> 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_20800166 - Participating customers have different Dunning procedure (KNB5-MAHNA) ?

  The SAP error message CNV_20800166 indicates that there is a discrepancy in the dunning procedures assigned to participating customers during a data migration or conversion process. Specifically, the error arises when the system detects that the customers involved have different dunning procedures defined in the customer master data (table KNB5, field MAHNA).
  Cause:
  The primary cause of this error is that the customers being processed have different dunning procedures assigned to them. Dunning procedures are used to manage the collection of overdue payments, and each customer can have a different procedure based on their payment history, creditworthiness, or other criteria. When the system attempts to process these customers together, it requires that they share the same dunning procedure to ensure consistency in the dunning process.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Customers: Determine which customers are causing the issue. You may need to check the logs or the details of the migration process to find the specific customer accounts involved.
  
  
  Check Dunning Procedures: For each of the identified customers, check their dunning procedure settings in the customer master data. You can do this by navigating to the customer master record (transaction code FD03 for display) and reviewing the dunning information in the "Dunning" tab.
  
  
  Standardize Dunning Procedures: Decide on a common dunning procedure that should be applied to all participating customers. You may need to consult with your finance or accounts receivable team to determine the most appropriate dunning procedure.
  
  
  Update Customer Records: Update the dunning procedure for the customers that have a different procedure. You can do this using transaction code FD02 (change customer) and modifying the dunning procedure field (MAHNA) in the customer master data.
  
  
  Re-run the Migration Process: After ensuring that all participating customers have the same dunning procedure, re-run the migration or conversion process that triggered the error.
  
  
  Related Information:
  
  Dunning Procedure Configuration: Ensure that the dunning procedures are properly configured in your SAP system. This includes defining the dunning levels, dunning texts, and any other relevant settings.
  Data Migration Tools: If you are using a specific data migration tool (like SAP S/4HANA Migration Cockpit or SAP Data Services), refer to the documentation for any additional requirements or settings related to dunning procedures.
  Testing: After making changes, it is advisable to conduct thorough testing to ensure that the dunning process works as expected for the updated customer records.
  
  By following these steps, you should be able to resolve the error CNV_20800166 and proceed with your data migration or conversion activities.