We have reached the painful stage in our project where we are mapping Bloomberg tickers to CDS entities. As can be seen from the CDSS screenshot below, the tickers are not exactly intuitive.

For example "CAB1E5" is Abbey Senior 5 year

so you would assume that 1 equals senior, and the E5 equates to 5 year maturity, but this is not always the case. Why they couldn't use a combination of markit ticker (or red code), seniority and tier is beyond me.
Example for the above could be: ABBEYSNR5
Anyway CDSD, option 17 can be used to download all Bloomberg CDS tickers