Diagnosis
A volume correction factor procedure that requires calculation ofcompressibility and/or supercompressibility through user exit
EXIT_SAPLEA54_001 is active for the specified register. In thiscase, however, calculation was not possible, because return tabley_table_compr_factors was returned empty.

Procedure
Analyze the cause of termination in your user-defined user exit.
Inform the person responsible for programming the user exit.

The person responsible for the program should note the following:
RESET N1
In the IS-U menu, choose Billing execution -> Billinganalysis.
Choose Settings -> General, then set the Debugging on
indicator.
Start a billing simulation with the affected contract. Enter TGHUEXITin the Breakpoint at field.
You immediately branch to the point where your user exit is called, andyou may be able to localize the error in debugging.