Hi Venkateswaran,
It looks like this table is part of a standard workflow (WS12300111). The NEXT_PROCESSOR_I field sounds like it is part of the standard approval logic. Rather than custom development you may want to work with the standard SAP customization, or a BAdI. Have you tried configuring in transaction PTARQ? (you can get to the BAdI from here also) You may want to check the thread How to execute WS12300111 ? or search more in the space for SAP Business Workflow.
I hope this is helpful to you!
Margaret