How to write Requisition rejection rule based on charge accounts

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How to write Requisition rejection rule based on charge accounts

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Hi,

Currently, we have configured all our Requisition Approvals based on Amount ranges as well as Charge Account ranges as suggested in the post "Knowledge Article: Approvals Triage: Configuring Approval Rules based on Charge Accounts" . But there can be some Requisitions that are created with a charge account combination for which there is no approval rule. In such cases, how to write a Rejection rule. Please suggest.

Currently we have not written any rejection rule, and hence the Requisition status shows " Pending Approval". But when we click on Pending Approval status hyperlink, system is displaying below error.