Who has the authority to make changes to the terms and conditions of the On$-$Call Purchase Order $($specifically$,$ changes to service level requirements, quality requirements, pricing, delivery, deletions or additions of new items, and$/$or revisions to Authorized Callers or Authorized Invoice Approvers$)$

$$ Authorized Caller

Authorized Receiving Employee

Authorized Invoice Approver

Using Organization Management

Supply Chain Management Buyer