ACCT Determination question- Very urgent please help

URGENT:

When I was using transaction MB1C (Enter Good Receipts):

I wanted to post goods receipt for material-A for 100 pieces.

I am getting the following error

Account determination for entry RRKA TAW QJ01 ___ 9910 not possible

I went on to look for help I got the following diagnosis:

The system did not find an account for this transaction. This means that the account determination for key TAW QJ01 ___ 9910 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

Please help me what I should do!!!!

This very urgent