再问一个 补料信里面的内容 的问题

rommi

The reference details for this application are:

APPLICANT: xxxxxxxxxxxxxx
TRANSACTION REFERENCE NUMBER: xxxxxxxxxxxx
FILE REFERENCE NUMBER: xxxxxxxxxxx
ICSE REQUEST ID: xxxxxxxxxx

Please ensure that these reference details are included as the first part of the subject line.
DO NOT send any original documents or provide paper copies of documents already attached
to the web browser or sent by email, unless specifically asked to do so by your case officer.
Please note that, while the department acknowledges the receipt of an application, the receipt
of subsequent correspondence is not normally acknowledged.

意思是不是说我给他们写邮件 那4个要放在邮件标题栏里面？