The Optional Reviewer check box in the AP Unapproved Invoice Entry form header, Reviewers tab.

When this check box is selected, this reviewer is designated as optional on all applicable lines for this invoice, which allows for one of multiple optional reviewers to approve invoice lines with a given approval sequence. Changing this setting affects the setting on this reviewer for each line.

As long as more than one optional reviewer is assigned to each invoice line's approval sequence, only one reviewer must review and approve in order for the approval process to advance. However, if the only reviewer on an invoice line's approval sequence is an Optional Reviewer, their approval becomes required in order for the approval process to advance.

Setting ALL reviewers on a sequence as optional does not eliminate the approval requirement for that sequence. If an invoice line's approval sequence contains multiple reviewers, the following rules apply to allow the approval process to advance:

• if ALL reviewers on a sequence are set as optional, at least one must approve
• if ALL reviewers on a sequence are set as non-optional (Optional Reviewer check box is not selected), all must approve
• if some reviewers on a sequence are set as non-optional and some as optional, all non-optional must approve