Inter Company billing issues with product heirarchy

Question

Hi,
Wish you a Happy New year,,,,,,,
We have done all the necessary configuration for generating Inter Company billing including the Cost booking to vendor Automatically.
There are certain points where I need some help,
1) During Idoc genration we are getting error related to Payment terms of Internal Customer.
If the payment terms is immidiate then only an Idoc is getting generated,,,,,,,,, else it is throwing an error message " status 51", but according to our business requirements it may be for any days and this may also impact our aging analysis and cash flows.
2) We have configured upto Third level of product hierarchy but while creating a contract if user maintains only upto first level, then release to account is not happening for inter company billing. Where as if user maintain upto third level there is no issue in the whole process of inter comapny billing.
Kindly suggest us how to restrict user to maintain product hierarchy pto third level during the creation of contract.
3) during the Inter company billing generation, if the internal customer is eligible for Tax exemption or tax booking, that is how to book the tax details to internal customer and also to vendor while booking the cost.Please let us know the logic for tax processign in Inter company billing and Idoc generation.
Awaiting for a favourable reply and thanks in Advance.
Regards,
Upendra.

Answer 1

Double click the status 51 to find the error message. 51 just tells that the Idoc has an error, but which error can only be seen if you go a step more into detail.
For what reason do you have level 1 product hierarchies in the system, if you need the full hierarchy to level 3?
I give you example:
Level 1 =11111
level 2 = 21111, and 22222 and 23333
level 3 = 31111 and 32222 and 33333
Hierarchy should only be maintained available in customizing only in its full length:
111112222233333
or 111112111131111
but not the level one alone.