Just now tried this and it did not work. Signing into RAC and attempting to upload using xml internet file transfer. Here is an excerpt of the file schema with repid replaced here with *s:
<trnmtr_nbr>*******</trnmtr_nbr>
And here is the error message from CRA:
* Attach file
Error: We are unable to process your submission because the representative ID given in the attached T619 electronic transmittal record does not match the representative ID you used to sign in.
