Credit Memo - Accounting Document is not generating

Hi,

I have created a Credit Memo and removed billing block in VA02.

Now, in VF01 i generated the billing document. But the Accounting Document is not generated.

In VF02, when tried to do "Release to Accounts", it says " An Accounting document is not required for this Billing Document"

When checked the Pricing conditions in billing, at Header level there is no Value. But in detail level there is value for all condition types.

Also, during billing in VF01, when tried to check "Account Determination Analysisi - Reconcilliation Accounts", it says error message as "Accounting assignment analysis cannot be carried out for this Billing Type"

Can you please help me out on this.

Regards,

Ramki