How to establish relationships Betw parent & child contracts in ERP and the functional for the same

Summary:

We had some requirement from the client, basically they would like how to establish relationships between parent and child contracts in ERP. So, if anyone knows the setup and usage of this functionality, please share with me and this would be a great help for us.

In addition, they also want to know the difference between commercial contracts and the type of agreement contract. Because they would like to create a contract for future sales, if they know the exact functionality of both, they will create a contract for future sales.

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