Jelena,
System does not allow to create a subsequent (after the first) output condition record with the same values in the key combination and just change the partner. It is not allowed because system perceives it as a "duplicate record".
OP needs to add this partner as one of the fields in the condition table and then create different condition records with same values and different partner (production company).
For example:
1. Configuration:
Condition table with 3 fields: Delivery Type, Customer, Production company> Language
2. Condition record, VV21
LF, CUS1, PC#DE > EN
3. Delivery creation, VL01N:
In this case, CUS1 is situated in Poland and production company in Germany. Therefore the delivery note should be printed in EN (and not in DE).
TW
Message was edited by: TW Typewriter - given an example, to further clarify the point made.