Rollback automatic if Document.Add fails ?

Question

Hi,
please have a look to this code
oCompany.startTransaction
If (0 <> objInvoice.Add()) Then
do you confirm that if Add or Update or other similar operations fails, the transaction automatically rollback without inserting this line of code?
oCompany.EndTransaction(SAPbobsCOM.BoWfTransOpt.wf_RollBack)
I find this thing debugging my code.
Has it always been so or only in last versions of SDK - DI ?
Thank you
Andy

Answer 1

when working with a single object like the invoice object - SBO handles the transaction for you. thus when the add fails the system handles it for you - same thing if the add succeeds. you should only use transactions when you are doing adds/updates on multiple objects that rely on each other.
thus:
1. start transaction
2.1 add/update object 1
2.2 add/update object 2
2.3 add/update object 1
3. commit trnasaction
or
on exception or failure of 1 of the objects
roll back
NB : if you start a transaction, you HAVE to end it with a commit OR rollback