Device &1 reg. &2 per. &3-&4: compress. table from user exit unclear

What causes this issue?

A volume correction factor procedure that requires calculation of
compressibility and/or supercompressibility through user exit <LS>
EXIT_SAPLEA54_001</> is active for the specified register. In this
case, however, the value could not be calculated because return table
y_table_compr_factors is implausible. It contains table entries in
which the calorific value district does not correspond to the calorific
value district that is passed on in parameter X_GCA.

System Response

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?

First analyze the cause of the termination in your user-defined user
exit. Inform the person who is responsible for programming the user
exit.


The person responsible for the program should note the following:
In the IS-U menu, choose <LS>Billing execution</> -> <LS>Billing
analysis</>.
Choose <LS>Settings</> -> <LS>General</>, then set the <LS>Debugging on
</> indicator.
Start a billing simulation with the affected contract. Enter TGHUEXIT
in the <LS>Breakpoint at</> field.
You branch immediately to the point where your user exit is called, and
you may be able to localize the error in debugging.

Error message extract from SAP system. Copyright SAP SE.