** What is the tcode to restart workflow (BPM Error)

Hi friends,

We have designed a complete BPM for (Sales Order --> Delivery --> Invoice) based on the Purchase Order data. This scenario is working fine.

But, the problem is if any error will be happened in any of the step, we want to restart that step once we correct the error. Assume that SO was created successfully, but, delivery is not created due to some system error. So, we want to restart from this step. ..

How do we restart ? What is the tcode to restart ?

Kindly reply friends.

Kind Regards,

Jeg P.