Incorrect C-Form Rectification

Dear Friends,

We had applied for C-Form for the month of Jan-Mar 08.However inadvertently Apr-08 transactions also got included in the upload file.Seperately C-Forms for the month of Apr-June 08 was also applied.So for Apr-June we did not include Apr-08 transactions.So we got C-Forms as per below :Jan-Mar 08 (includes Apr 08 also) & Apr -June 08(excludes Apr-08.

These were also sent to vendors.However some of them have returned the C-Forms for Jan-Mar 08 and asked us to get the same rectified.

My Question is :

1.Whether rectification is required.

2.If yes what is the procedure approx timelines and the forms to be submitted.Also section no.

Thanks !