3826718 - Error: "One or more expenses are missing account codes" when an Expense Processor is trying to approve an expense report

We are trying to approve expense reports as Expense Processors but we are getting an error message "One or more expenses are missing account codes. A system administrator must add the account codes for these expense types before processing the report."

KBA , CON-EXP-ADM-ACC , Account Codes , CON-EXP-ADM-EXT , Expense Types , Problem