101 Type of movement. problems in posting materials

Question

Hi, dear SAP gurus. I have found a strange problem when i tried to post materials(in MIGO transaction, 101 type of movement).
I chosed "Goods Receipt"-"Purchase Order", 101 tpe of movement, then entered a number of purchase order, all materials opened, everything OK. Then I click "To Check". The system write that "the document is OK". But when i try to post, there are appears a mistake:
"Account determination for entry "in such a chart of accounts" WRX "in such a company code" , "in such an account" not possible
Message no. M8147
Diagnosis
The system did not find an account for this transaction. This means that the account determination for key CAUA WRX OBL0 ___ 2010 is not maintained in MM Customizing (Valuation). The key is made up of:
Chart of account
Transaction key (= Posting transaction)
Valuation grouping code
Account grouping code
Valuation class
System Response
The system cannot update a G/L account for this transaction. You cannot post the transaction.
Procedure
Contact your system administrator.
If you have the authorization, check the Account determination in Customizing for Valuation.
Proceed
Note
The relevant posting transaction can be found in Table T030A."
Please, help me. What is wrong? I have already checked every customization(types of materials, materials data, the chart of account, OBYC transaction and WRX operation. Everything is right. All worked last month, i made such operations and thre was no problems. I need to test MRP in few days but this mistake is killing me.........HELP
Edited by: Jürgen L. on Feb 1, 2012 11:45 PM
Subject changed to meet the forum rules

Answer 1

SAP gave you already the content that is misses in the account determination:
CAUA WRX OBL0 _ 2010
SAP is searching for this combination in your customizing table T030 because it knows those values from customizing and master data.
Hence either your customizing is not complete, or your master data is not maintained well.
you only have to seperate this info
CAUA WRX OBL0 _ 2010
  into the different parts
CAUA is your chart of accounts
WRX is the transaction key
OBL0 is your Valuation grouping code
no vlaue for Account grouping code
2010 iis the Valuation class from your material master
so you only need to check if you have an account for this combination in your customizing, (best you do this with SE16 directly in table T030) I am certain you do not have an entry for this combination.
now it is important to know how your entries for WRX transaction key look like in your T030, I mean entries that are close to the desired one.
Do they have an account grouping code?
do they have a different valuation class?
Is 2010 the right valuation class for your material? if not, then change it in material master and try again.