Are you asking why the Marriott membership number was not filled in when applying for the CITIC Marriott credit card? Backend system issues.
Because of the CITIC backend system, Marriott members who previously applied for a co-branded card and filled in their Marriott membership card number online were unable to approve the card. The problem with CITIC's backend system has not been resolved, and the option to fill in the Marriott membership card number online has been closed, but the channel to apply for a co-branded card online is still open.
The CITIC Marriott Credit Card is a high-end credit card issued by China CITIC Bank. It adopts Mastercard international standards and has a wealth of elite benefits and exclusive privileges.