Can two condition contracts be applicable at the same time?

Dear Gurus

We have been working on Condition Contracts and have achieved many scenarios using SAP.

Our concern is that whenever there are two active contracts in the system, there is an ERROR which disallows the reading of 2 contracts together.

It is very vital that all the active contracts in the system get read because there will be different types of commissions/Chargebacks assigned to the various parties with whom the contract is entered into.

Please Advice.

Thanks

Sahil Gupte.