Help: Configure the Prefix on PRD/Production system

Friends,

I´ve already created the prefix tasks for workflow on DEV and I´ve already transported it to QUA and PRD system.

But Now I have to test the workflow on PRD system, but when I went on SWU3, the system is saying that I have to configurate the prefix. When I went to the OOW4 to see on production/PRD, It´s already created but it is configured with the DEV system.

What can I do ?