3815938 - Why am I getting the error message: "There are no approvers defined in your workflow. Please contact your Expense/Invoice administrator for assistance" when trying to submit/approve an expense report/invoice?

When a user tries to approve or submit an expense report/invoice, they see the error message: "There are no approvers defined in your workflow. Please contact your Expense/Invoice administrator for assistance."

Error received when submitting or approving an expense report or an invoice: "There are no approvers defined in your workflow. Please contact your Expense/Invoice administrator for assistance" , KBA , CON-EXP-ADM-WFL-WL , Workflow , CON-CA-ADM-USR , User Administration , Problem