Steps to reproduce:
-Create company A
-Create company B
-Admin user with both companies but currently in company B
-Create Demo user only with company B
-Create fiscal position A to company A
-Create fiscal position B to company B
-Create vendor with fiscal position A with company A and the same vendor with fiscal position B in company B
-Create product and add the vendor created before
-Set like Create a draft purchase order
-Logging with Demo user
-Create sale order with one sale order line with route make to order
-Validate sale order
Bug:
The purchase order created by sale order had the fiscal position company A.
Closes#23561
opw:1825098
Goffin Simon
5bb6517072