Sales document block

Question

hi all,  i  want  to  know   in  how  many   ways  a  sales    doc  can be blocked.
1.)how  can   be a  sales   order  be  blocked  or  delivery doc or  billing doc can be blocked.
2.)and  on what  basis  are they  blocked  in  real time  scenarios.
so  if you could   tell me 
3)how   to  do  and   where  is it   done  in different  ways  in  the config. screen also  where   could be the  blocked  documents , be seen. and   are there  any  specific  tables    related  to it. 
the  only way  i know   to block  a sales   doc  is   during  credit   groups  in credit management  functions .  can  you  tell me  a  few  more.
thanks
wil point  awards  for  sure. thankyou , s .roy

Answer 1

Hi,
There are different ways by which you can block Sales Order:
1.Define reasons for rejection where you can select what you want
to block/reject
Sales and Distribution->Sales->Sales Document Item
2.Define an incompletion procedure that allows you as well to decide
what next activities you want to block.The fact is that,
the system automatically blocks/unblocks the order depending upon the level of completion.
Sales and Distribution->Basic Functions->Log of Incomplete Items
3.Define a delivery block to block a sales at the delivery level
Logistic Execution->Shipping->Deliveries->Define reasons for blocking in
shipping
4.Define a billing block to block sales at the invoicing stage
Sales and Distribution->Billing->Billing Documents->Define blocking reason
for billing
5. Credit management is yet another way to block sales. When the customer
exceeded his credit-limit, the system can block the order unless the
Accounting department has either released the customer or this specific
sales order.
Next to the customizable options there is the user-exit.
User exit MV45AFZZ, or MV45ZFZB.
Regards,
Sophia Xavier