How To Fix CNV_20100621 - Scenario &1 and scenario &2 cannot run together

CNV_20100621 - Overview

• Message type: E = Error

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

• Message number: 621

• Message text: Scenario &1 and scenario &2 cannot run together

What causes this issue?

You want to change multiple charts of accounts in one step. To this
purpose, you made the corresponding number of mapping entries for charts
of accounts in the view <ZK>Old/new chart of accounts </>of the activity
<ZK>Specify Mapping Values (Chart of Accounts)</>.

System Response

The system now compares the conversion requirements that result from
each mapping entry, and checks if they can be combined for processing.
A mandatory prerequisite for this is that the indicator for copying a
chart of accounts is set in the same way in all mapping entries (
<ZK>Copy Rows</> indicator in the view <ZK>Old/new chart of accounts
</>). Here, this was not the case.
If the <ZK>Copy Rows</> indicator is set, the master data of the old
chart of accounts is copied (and given a new ID) when the old chart of
accounts is converted into the new chart of accounts (and, if necessary,
accounts are merged or renamed), while the old chart of accounts
continues to exist without any changes in the system after the
conversion.

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

How to fix this error?

Check the mapping again and make sure that the settings really reflect
what you plan to do.
If you cannot unify the indicators for logical reasons, you have to do
the conversions using separate packages.

Error message extract from SAP system. Copyright SAP SE.

CNV_20100621 - Details

• The SAP error message CNV_20100621 indicates that two scenarios (denoted as &1 and &2) cannot be executed simultaneously. This error typically arises during data migration or system conversion processes, particularly when using SAP's tools for data transfer or system upgrades.
  
  Cause:
  The primary cause of this error is that the two scenarios in question are likely conflicting or dependent on the same resources or data sets. This can happen in various situations, such as:
  
  Resource Locking: Both scenarios may be trying to access the same database tables or resources, leading to a conflict.
  Data Dependencies: One scenario may depend on the completion of another scenario, and running them concurrently could lead to data integrity issues.
  
  Configuration Issues: There may be configuration settings that prevent the simultaneous execution of these scenarios.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Sequential Execution: Run the scenarios one after the other instead of concurrently. Ensure that the first scenario