By default in the billing wizard the system will create documents to multi (All currency customers) in the local currency. If you wish to have a different currency you have the option to define it on the BP Master Data window.
Example:
Customer "My Customer" is defined as "All Currency" but in time task we wish to create documents in currency "EUR".
In order to achieve this we define "EUR" in the B1TT: Billing currency and documents will then use this currency.
FAQ on the system:
Q: What happens if I on an "All Currency" customer leave "B1TT: Billing Currency" blank?
A: Then the local currency will be used
Q: What happen if I specify a Billing Currency on a non-All Currency BP?
A: In such a case the value is ignored and BP currency is used
Q: What happen if I specify a Billing Currency that does not exist?
A: In such a case the Billing Wizard will fail to complete.