PO initiator is not able to approve and forward the created PO in purchasing module.
When cross checked in the employee details of PO initiator in HRMS application. Position of that employee was not available (It was blank).
Later we cross checked and assigned the respective position for that employee i.e. PO initiator. Once it was fixed the PO approval process was working smoothly.
My query here is, under what circumstances position of an employee is removed by the system (If not manually removed).
As concerns to Purchasing module, you set the Job/Employee Supervisor hierarchy for the Purchase order approval process rather than Position hierarchy.