How To Fix CNV_20800158 - Participating customers have different Language key (KNA1-SPRAS)

CNV_20800158 - Overview

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 158

• Message text: Participating customers have different Language key (KNA1-SPRAS)

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>Language Key</>. (This is
determined by the indicator <ZK>Language Key</>, field KNA1-SPRAS).
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>Language Key</> 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.

CNV_20800158 - Details

• The SAP error message CNV_20800158 indicates that there is a mismatch in the language keys (SPRAS) for participating customers in a data migration or conversion process. This typically occurs during data transfer or when merging customer data from different systems where the language settings are not consistent.
  
  Cause:
  The error arises when:
  
  Two or more customer records have different language keys in the KNA1 table (which stores general data for customers).
  The language key (SPRAS) is used to determine the language in which customer data is stored, and if these keys differ, the system cannot process the records together.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Records: 
  
  Use transaction codes like SE16 or SE11 to check the KNA1 table for the customer records involved in the migration.
  Look for the SPRAS field to identify which customers have different language keys.
  
  
  
  Standardize Language Keys:
  
  Decide on a standard language key that should be used for