Mapping for date field from one module to another.

Mapping for date field from one module to another.

Hi there,

I want to be able to map a date field(due date) in a module (sales order) to another module's(Purchase Requisition) date field(Promised customer date).

Is this possible when the due date field is a zoho system date field while the promised customer date is a custom date field. If its possible please assist me with coding it.