Hi Mayur,
Either you can reverse the whole document and create new document or raise credit note of 10 rs.
If you are using SAP 9.0 or above just right click on A/P invoice and cancel the invoice. It will reverse the journal entry and you can create correct entry again and if you are using 8.82 version then create credit memo of that invoice and recreate the A/P invoice with correct value.
Please let me know if you need more help.
Thanks,
Harshal