What options do Microix include to help control spending on purchase orders

What options do Microix include to help control spending on purchase orders?

Option 1: Prevent a purchase request from being submitted for approval. This option will not allow a document to be routed for approval

Option 2 : allow the document to be submitted with a warning message for both the requester and approver. The document will continue to route through the approval process if no funds are available and it will be up to the approver to approve or reject the request