Problem with excise invoice cancellation

Hi,

We have created GR (101) and captured excise invoice at the time of MIGO itself.

Now after Usage Decision it was cancelled by MIGO - Movement Type 122 since 102 is not possible after UD.

So, excise invoice was not cancelled in this process. The status of excise invoice is "In Process".

We created another GR and while capturing excise invoice at the time of J1IEX, it says excise Invoice already exists for the vendor.

So, we tried to cancel excise invoice through J1IEX. But it says , "Reverse the material document before cancelling excise invoice".

The material document is already reversed.

What to do ? Where are we wrong ?

Regrads,

Vishram