Many thanks Can this be automated by rules?

Not that I know of. The system does not provide a way of specifying rule criteria that are specific to returns.

Hi Paresh, let me know one thing, We have enabled 3 steps route,

200 qty validated and stored in WH/Input
Then another operation WH/Input -> WH/Quality Control
How we can check the quality?? If I install quality module and the quality team needs to reject some products, how can I return quantity?

Return Option available but,

First we need to validate WH->input to WH/Quality Control transfer right???
After validation system automatically called next operation WH/Quality Control > WH/Stock
If the process doing by different people then how they can get to know quality needs to return test failed product??