How To Fix CNV_20100203 - Merge at A/B level: No priority control for merge to cost element &1

CNV_20100203 - Overview

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 203

• Message text: Merge at A/B level: No priority control for merge to cost element &1

What causes this issue?

It was found that two or more old cost elements ae mapped to target &V1&
, but the priority indicator is set for none of these.
If the priority indicator is not set, it is not clear which settings
will take priority when the cost elements are merged into &V1&.
Besides, the check showed that the merge will take place at
<DS:TX.CNV_20100_TX_ASEGMENT>A level</> as well as at
<DS:TX.CNV_20100_TX_BSEGMENT>B level</>.
The following cost elements in controlling area &V4& are merged at B
level:
&V2& -> &V1&
&V3& -> &V1&

How to fix this error?

Set the priority indicator for one of the entries with target cost
element &V1&.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

&NOTE&
It is possible to do the conversion without setting the priority
indicator. In this case, however, you should check the A and B segment
settings for the cost element &V1& after the merge.
&ADDITIONAL_HINTS&
This message is also displayed if the merge is implicit. In this case,
the log will contain another message for target &V1&, which describes
the recommended next steps.
The priority indicator must not be set more than <ZH>once</> for all
merges to a given target. This is also valid for cross-chart of accounts
merges.
The super priority is mainly useful for tables whose key contains the
chart of accounts ID, but no other field that needs to be converted in a
chart of accounts conversion, such as account assignment (table T030 and
others).
Note also that even if a <DS:TX.CNV_20100_TX_SUPERPRIO>super priority</>
was defined at chart of accounts level it is still not clear which
settings (from which account/cost element) will prevail during a merge
to a given target if <ZH>more than one</> account/cost element from the
<ZH>same</> chart of accounts is merged into this target.

Error message extract from SAP system. Copyright SAP SE.

CNV_20100203 - Details

• The SAP error message CNV_20100203 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with merging cost elements at the Activity-Based (A/B) level, specifically that there is no priority control defined for the merge operation.
  
  Cause:
  
  Missing Priority Control: The error suggests that the system does not have a defined priority for how to handle the merging of cost elements. This can happen if the configuration for merging cost elements is incomplete or not set up correctly.
  Data Inconsistencies: There may be inconsistencies in the data being migrated, such as duplicate cost elements without a clear priority for which one should be retained.
  
  Configuration Issues: The configuration settings for the migration process may not be properly aligned with the requirements for merging cost elements.
  
  
  Solution:
  
  
  Define Priority Control: 
  
  Check the configuration settings for merging cost elements in