Business scenario

Scenario

Dear Experts please help to MAP below mentioned scenario.

We purchased FORGING from vendor.

During GR , stock is moved to QI stock and after quality checking it transferred to unrestricted stock.

After issueing it , we came to know that there are blowholes in casting, which is vendor rejection.

Now we want send the material back to vendor, how should we map this senario.

Also after rejection from production where should we move this stock ( BLOCKED ??). What are the movement types involved in the whole cycle

Material is EXCISABLE material.What are the excise transactions envolved in this.

How to MAP if payment is done and not done?

With same scenario if the vendor is subcontracting vendor how can we map it SAP.

Regards,

KJ