How To Fix CNV_20100202 - Merge at A level: No priority control for merge to cost element &1

CNV_20100202 - Overview

• Message type: E = Error

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

• Message number: 202

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

What causes this issue?

The system found that two or more old cost elements are 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 only take place at
<DS:TX.CNV_20100_TX_ASEGMENT>A level</>, while no merge will take place
at <DS:TX.CNV_20100_TX_BSEGMENT>B level</>.

How to fix this error?

Set the priority indicator for one of the entries with target cost
element &V1&.
&NOTE&
It is possible to do the conversion without setting the priority
indicator. In this case, however, you should check the A segment se
ttings for the cost element &V1& after the merge.

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

&ADDITIONAL_HINTS&
This message is also displayed if the merge is implicit. In this case,
the log will contain another message for target &V1& that 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_20100202 - Details

• The SAP error message CNV_20100202 Merge at A level: No priority control for merge to cost element &1 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with the merging of cost elements in the migration process, specifically that there is no defined priority for how to handle the merge.
  
  Cause:
  
  Missing Priority Control: The error suggests that the system does not have a defined priority for merging 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 rule on which one should take precedence.
  
  Configuration Issues: The settings in the migration tool or the underlying configuration in the SAP system may not be properly aligned to handle the