Excise invoice - 162 Movement

Dear Experts,

  I have created the return purchase order(161 movement type),Excise invoice is created in J1IS with respect to 161 material document.

I have cancelled the Return material document with 162 movement type and created excise invoice in J1IS with respect to 162 material document.

Same excise accounting entries are created for 161,162 material document which is incorrect.

Please guide me what is the exact process for excise invoice creation for 162 movement type.

regards,

Narendra