Setting invoice lock when creating contract object

Question

Hello,
For specific contract objects we don't want to create an invoice if a document is posted on there. In the contract object you have a field called invoice locking.
When i set this manually it is working fine, so now i want this to be set automaticly. The problem here is that i don't know how this can be done.
I've tried the sample document:
IMG: Financial Accounting -> Contract Accounts Receivable and Payable -> Basic Functions -> Contract Object -> Number Ranges and Contract Object Types -> Define Sample for Contract Object Types
Here you cannot set the invoice locking
And I've tried the badi in student accounting:
IMG: Student Lifecycle Management -> Master Data in Student Lifecycle Management -> Student Contract Accounts (Student Accounts) -> Technical Settings for Automatic Creation and Update -> BAdI: Student Account Data
Here i didn't find the invoice locking field
Next to this it seems te me that you cannot set the invoice type or tax codes in the contract account and / or contract object without using the badi. Is this assumption correct?
Can someone please help how to set this automaticly?
Thanks a lot,
Lukas Molenaar
Edited by: L. Molenaar on May 6, 2010 1:02 PM

Answer 1

Hello,
Thanks a lot for your answer!
From what I understand is that in the IMG setting you provided you can trigger the badi above for example:
If the invoice type is dependant on the communication language then you add the FM HRIQ_EVENT_ST_ACCT_UPD_BACKGR for an insert / update / delete for the 1702 on the st.
Then you can add in the badi if the communication language is EN then invoicetype =  Z1 if <> EN then Z2.
Please correct me if i'm wrong
The problem i'm having is not so much with the triggering but more with the setting of the invoice lock. I would suspect that you can add the invoice lock from the badi, but i don't know how to do that.
I hope you can help me further.
Kind regards,
Lukas Molenaar