PO Release Approval Error

First i did Release strategy in one client and i have transported it to other client

that time i didnt know that it cant be transported

After doing 3 PO when i tried to release it then i come to know that i have to configure again the Release Strategy in this client

When i tried to reconfigure it after doing some changes i want to check the class

when i clicked on Edit class it is showing the error

Class type 032: Class PO_RELEASE_CLASS being processed by MMUSER