Hi,
As per my awareness, there may not be any ready-to-use functionality for GPF (like EPF IT587). However you can explore of using 587 with creating different Trust name as GPF trust. But % of deduction part, you may have to check with it. You can also explore using infotype 57 (membership fees) with MLIC model wage type, which is having similar functionality. But you may have to build your own Basis wage types for % part with custom PCRs.
I hope, your implementation is a Central Govt. Organisation.
We can wait for experts comments on this.
You can also search SCN for similar threads.
regards,
Bala.