Quantity contract and new condition type

Hi SAP Gurus,

I need you help. We have a project, where we should use Quantity contract. In this case we should pay 100 EUR (material cost) + 10 EUR for tools. Total price 110 EUR

I have created a new condition for the tools, as the 10 EUR should be booked into an accrual account.

But the 10 EUR is booked in Credit on the acrual account, and it should be booked as a debit. I have tried to change the condition to Negativ value, but then the tool cost is being withdrawn in the contract, which is incorrect.

Can enyone tell me how it is possible to get the tool cost debited, when making the goods receipt of the PO ?. The tool cost is not part of the costing and standard price.

Thanks and best regards

Pernille