Key figure &1, type '&2': invalid data type '&3' will be replaced by '&4'

What causes this issue?

Key figure &V1& has key figure type '&V2&'. Data type '&V3&' is not
supported for this key figure type.
The following key figure / data type combinations are possible:
Key figure Data type
AMO Amount CURR Currency field, stored as DEC
FLTP Floating point number with 8 byte accuracy
QUA Quantity QUAN Quantity, stored as DEC (not true for Stock
Coverage key figures)
FLTP Floating point number with 8 byte accuracy
NUM Number DEC Calculation or amount field with dec. and +/-
FLTP Floating point number with 8 byte accuracy
INT Integer INT4 4 byte integer, whole number with +/- sign
DAT Datum DATS Date field (YYYYMMDD), stored as char(8)
DEC Calculation or amount field with dec. and +/-
TIM Time TIMS Time field (hhmmss), stored as char(6)
DEC Calculation or amount field with dec. and +/-

System Response

Data type set to '&V4&'. This is the default for key figure type '&V2&'

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.