Ap invoice process scenarios

We have created new rule for specific supplier number invoices goes to specific requester(two requesters), so we have used supplier number “is” condition for the new rule and we also used supplier “isn’t” condition for other amount based rules

Third scenarios is that like if the requester is other than Kheth and Steph, it has to go the amount based rule hierarchy

Third scenario invoice got failed due to supplier” is not” condition

We need help to fix this third scenario3.

the rule or condition should not impact other suppliers scenario  like if the suppliers other than 1086 and 1088  with requester is Kheth and Steph or if the suppliers other than 1086 and 1088 with requester is other than Kheth and Steph