The salary elements known as fixed are maintained historically here.
Each salary item is defined:
Only one entry can exist for a type of salary at a time! If, for example, a new entry is created for "Basic salary", any data records that overlap in time are treated as subordinate and automatically delimited.
This means that the new entry will then exist completely as intended, and one or more previous entries may then have a changed "Valid from" and/or "Valid to".
Important: Consider Time limitation and Historisation. so that you achieve the intended effectiveness and historization!
Details on the individual fields can be found under: Finances Field Index