When you register a new contract, review all expected additions that relate to this contract. For each one, delete it if the cost is now included in the contract sum, or transfer it into the contract. If they remain in addition to the contract, the cost is counted twice in the final forecast, and the contribution margin will be too low.
How to do it
Register the contract in Purchasing.
Go to the Expected Addition module, or open the production code, and find the expected additions that relate to the contract.
For each expected addition, choose:
Delete, if the cost is included in the contract sum.
Transfer to contract, if the cost should be moved to the purchase.
Also delete any planned purchases you have entered as placeholders for the same cost.
Check the final forecast on the production code.
Tips
When you work with purchases that are not fully clarified, you can enter the remaining expected costs as an expected addition. That way you know there are enough funds left when you make the purchase.