You cannot amend/delete a file which has been uploaded to Business On Line Payments Plus.
If you do not wish to go ahead with this file, simply do not authorise it.
If there are errors with the file, simply correct the errors, upload the corrected file again through Business On Line File Gateway and proceed to authorise the corrected file in Business On Line Payments Plus.
Please refer to the Business On Line File Gateway Customer Support Guide for further information by clicking here.