Gr/posting or not

Question

Good morning EXperts:-
1, I have one doubt, i.e We raise the P.O 1,000 qunatiites, or kgs, we are recieved the goods only 900,units   at that time of the posting,or  IN this situation SYSTEM POST the Entry or  NOT  or give the error message, or ( we are rise the debite note),
2. In this same way we are raise the P.O 1,000 units, BUT we are recieve the more than Purchase order, in this situation, what are the scanario's.(plz clarrify my doubt experts.). I will assinge the points,

Answer 1

Hi Ameer,
A subsequent debit/credit exists when an additional invoice or credit memo is received for a transaction that has already been invoiced.
Use
When you post an invoice or a credit memo as a subsequent debit/credit, you should note the following:
The system records every subsequent debit/credit in the purchase order history.
By posting a subsequent debit/credit, the system updates the ordering transaction on a value basis but not on a quantity basis. The quantity invoiced therefore does not change, but the total value invoiced does.
The maximum quantity you can subsequently debit or credit is the quantity that has already been invoiced. It is not possible to post a subsequent debit before an invoice. The system does not check the quantity delivered. A subsequent debit/credit cannot be blocked due to quantity variance.
If you are entering invoices or credit memos containing both standard items and subsequent debits/credits, you have the following options:
If the invoice consists mainly of subsequent debit/credit items, you choose the transaction Subsequent debit and deselect the field Subsequent debit/credit for the items that are not subsequent debits.
If the invoice consists mainly of standard items, you choose the transaction Invoice and select the field Subsequent debit/credit for the items that are subsequently debited.
If you want the system to carry out a price check for a subsequent debit, it compares the value invoiced to date plus the value of the subsequent debit with the expected value based on the purchase order. The system takes tolerance limits into account when carrying out the price check. If a price variance exceeds one of the upper tolerance limits, the subsequent debit is blocked for payment.
Use
You want to post an invoice or a credit memo for subsequent charges in which all the items are subsequent debits/credits.
Prerequisites
You can only enter a subsequent debit or credit for a purchase order item that you have already posted an invoice for.
Procedure
Choose Logistics Invoice Verification ® Document Entry ® Enter Invoice.
The Enter Invoice screen appears.
Choose one of the following transactions:
Subsequent debit
Subsequent credit
Enter the header data as required, and enter the Allocation that the subsequent debit/credit refers to.
Choose . The system proposes the invoice items.
All invoice items that an invoice has already been posted for are selected by default. The default quantity is the total quantity invoiced without a value.
Check the selection indicators and the quantities.
Enter the amount in the individual invoice items.
Choose  Post.
If the balance is zero, you can post the document.
Account Movements When Subsequent Debits/Credits Are Posted
The account postings for a subsequent debit/credit depend on the quantity that the subsequent debit/credit applies to:
If the quantity of the subsequent debit/credit is smaller than or the same as the quantity delivered, the system tries to post the subsequent debit/credit to the stock account. If the material is valuated with a standard price or if there is insufficient stock coverage for the quantity to be debited or credited, the amount is posted to a price difference account.
If the quantity of the subsequent debit/credit is larger than the quantity delivered, the system distributes the relevant amount proportionally. The part of the subsequent debit/credit that does not have a goods receipt is posted to the GR/IR clearing account. The remaining amount is posted to the stock account – or in the case of standard price control or insufficient stock coverage – to a price difference account.
Hope I had been able to help you. please assign points.
Rgds
Manish