Like we are using the symbol "0#US3MT=TWEB " for treasury we are getting fields like : PROD_PERM RDNDISPLAY DSPLY_NAME RDN_EXCHID NETCHNG_1 HIGH_1 LOW_1 CURRENCY OPEN_PRC HST_CLOSE BID BID_1 BID_2 ASK ASK_1 ASK_2 NEWS NEWS_TIME TRD_UNITS
Like we are using the symbol "0#US3MT=TWEB " for treasury we are getting fields like : PROD_PERM RDNDISPLAY DSPLY_NAME RDN_EXCHID NETCHNG_1 HIGH_1 LOW_1 CURRENCY OPEN_PRC HST_CLOSE BID BID_1 BID_2 ASK ASK_1 ASK_2 NEWS NEWS_TIME TRD_UNITS
You can try the Data Model Discovery tool which is available in the portal home page, under the Resources category.