Hi @zainrehman please check and see if you are using the correct line items to construct the formula (there might be a typo because in prior steps and now line items name may slightly be different, e.g. Override Shipping Method is Override Shipping Method? ). Also cross check line items format which you should have already set correctly. If you still face any error, please post screenshots of error, your module and test steps so it can be more helpful to understand and help further Thanks
... View more