Condition types accruals

Hi gurus,

I am thinking if following requirement is possible:

Condition types are not marked as accruals. ( Since these condition types will be the basis of tax calculation)

Post the amount of these condition types to dedicated G/L account other than material when posting GR.

I have made some tests, but failed.

If I did not mark the condition types as accruals ones, it was posted as material cost although I maintained account key when I define the calculation schema.

If I marked them as accruals ones, then they would not be the basis of tax calculation.

Any ideas on this requirements?

Thanks in advance.