You can implement your own comparators for the different fields, parameterized by company code (also generically with space or "*") and register book. For this, transaction sm30 will be used to update the table /EDGE/SII_CO_012. When there is no entry for a field, the comparison of the default class /EDGE/CL_SII_COMPARADOR_CAMPOS is used.
The configuration to be made is the following:
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