Message type: E = Error
Message class:  CNV_20400_CHECK - Messages for check functions (controlling area merge) 
Message number: 078
Message text: All participating controlling areas use similar curr/val. prof.
The participating controlling areas use similar currency and valuation
profiles. In-depth analysis of financial accounting, material ledger,
profit center accounting and CO versions required.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
You cannot run the transformation solution Controlling Area Merge
because certain prerequisites have not been met. Contact SAP for support
by opening a ticket on the component CA-LT-CNV.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20400_CHECK078 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the controlling areas involved in the migration do not have similar currency and valuation profiles, which is a requirement for certain operations in SAP.
Cause: The error arises when: Different Currency Settings: The controlling areas involved have different currencies set up. For example, one controlling area may be using a local currency (LC) while another may be using a different currency. Valuation Profiles: The valuation profiles for the controlling areas may not match. Valuation profiles determine how costs are calculated and reported in controlling (CO) and financial accounting (FI). Inconsistent Configuration: There may be inconsistencies in the configuration of the controlling areas, which can lead to issues during data migration.
Solution: To resolve this error, you can take the following steps: Check Currency Settings: Go to the configuration of each controlling
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_20400_CHECK077 All participating controlling areas use curr/val. prof.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_20400_CHECK076 Not all of the participating controlling areas use curr/val. prof.
What causes this issue?  Controlling areas with different settings regarding currency and valuation profiles cannot be merged.System Response  The sys...
CNV_20400_CHECK079 The participating controlling areas use different curr/val. prof.
What causes this issue?  Controlling areas with different setting regarding currency and valuation profiles cannot be merged.System Response  The syst...
CNV_20400_CHECK080 Controlling Area &1 uses a currency and valuation profile
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.