Amount  

This is a required field. The Document Totals section at the top of the page will get updated with this amount. The amount can be positive, zero, or negative (for discounts). The default value is blank.

If the PO is associated with a PR,  and Control Purchase Order Amount (in the related PR summary) is set to "Detail Lines", then the sum of line Amounts for a PO line must equal the sum of line Amounts on the PR lines. If Control Purchase Order Amount  is set to "Summary", then the sum of line Amounts for a PO line can be less than the Request Amount from the PR, but cannot exceed it.

When a PO line is created from a PR line, if the PR amount is positive (i.e., greater than or equal to zero), then the PO amount must also be positive. Likewise, if the PR amount is negative, then the PO amount must also be negative.