Reject Purchase Requisition

Warm Greetings !!!!!!!!!!!!!

With Reference to Release Strategy of Purchase requisition

After higher level release preceding level can still reject the purchase requisition example:

Below release for the level 100000/=

User create PR / Use

1st level of release Parts manager / Charles

2nd level of release service manager Zeeyaudeen

3rd level of release service Director Mohamed Ali

If Charles rejects the PR after released by Zeeyaudeen and Mohamed ali system allows to reject with out any error message. Is this an expected system behavior? Appreciate your advice

Share with me how it can be prevented to reject preceding PR with out their permission

Thanks & best wishes

Regards

Shamulheq