We recently started batch filings of CTRs. We determined that one of 10 CTRS in a recent batch had an error in the DL number. We only need to amend that one but can't find how to do this as there is no DCN or similar. Help!
Each CTR filed in a batch is also assigned a DCN. The attachment in the Acknowledgement has the DCN details. You should be able to go into your system and find it as well if you are uploading the acknowledgement attachments to your system.