Hi,

Just starting to look at Level 2 again and am getting "U" messages being sent through. These are not in the spec so I'm wondering if I am doing something wrong.

If I connect to MSFT this is what I get back (note that I am doing this at 4am NYC time).

I appreciate any help

MV.

U,MSFT,STXG,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,WABR,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,IEXX,0.,0.,0,0,99:99:99,2020-07-02,20,52,153,99:99:99,F,F,
U,MSFT,BOSX,0.,0.,0,0,99:99:99,2020-07-02,20,52,12,99:99:99,F,F,
U,MSFT,NEED,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,SSUS,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,KING,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,INTL,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,RAJA,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,PUMA,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,LEHM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,BMOC,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,BATS,200.,209.75,300,100,18:00:18,2020-07-02,20,52,18,18:00:18,T,T,
U,MSFT,WEDB,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,NSDQ,209.22,209.68,47,48,04:02:22,2020-07-06,20,52,5,04:02:16,T,T,
U,MSFT,MZHO,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,BARD,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,VIRT,0.,0.,0,0,99:99:99,2020-07-06,20,52,5,99:99:99,F,F,
U,MSFT,KEYB,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,DADA,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,ADAM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,SGAS,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,PIPR,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,JEFF,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,GTSM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,CINN,0.,0.,0,0,99:99:99,2020-07-02,20,52,10,99:99:99,F,F,
U,MSFT,WSEA,0.,0.,0,0,99:99:99,2020-07-06,20,52,5,99:99:99,F,F,
U,MSFT,CHXE,0.,0.,0,0,99:99:99,2020-07-02,20,52,8,99:99:99,F,F,
U,MSFT,LEER,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,CSTI,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,MAXM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,STFL,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,NATL,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,NITE,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,CTDL,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,XGWD,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,RBCM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,AMEX,0.,0.,0,0,99:99:99,2020-07-02,20,52,6,99:99:99,F,F,
U,MSFT,EDGA,0.,0.,0,0,99:99:99,2020-07-02,20,52,25,99:99:99,F,F,
U,MSFT,EDGX,206.5,206.74,500,100,19:59:40,2020-07-02,20,52,26,19:59:40,T,T,
U,MSFT,CANT,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,ETMM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,BATY,0.,0.,0,0,99:99:99,2020-07-02,20,52,28,99:99:99,F,F,
U,MSFT,MSCO,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,GSCO,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,WCHV,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,WBLR,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,VERT,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,RHCO,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,SPHN,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,ARCX,208.33,209.5,300,200,04:02:16,2020-07-06,20,52,11,04:02:16,T,T,
U,MSFT,SOHO,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,SUFI,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,IMCC,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,JPMS,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,AEXG,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,FLTG,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,PHLX,0.,0.,0,0,99:99:99,2020-07-02,20,52,80,99:99:99,F,F,
U,MSFT,JSSF,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,UBSS,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,COWN,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,MLCO,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,CDRG,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,TSSM,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,OHOS,0.,0.,0,0,99:99:99,2020-07-02,20,52,5,99:99:99,F,F,
U,MSFT,ARCX,208.33,209.5,200,200,04:02:24,2020-07-06,20,52,11,04:02:24,T,T,
U,MSFT,ARCX,209.,209.5,100,200,04:02:24,2020-07-06,20,52,11,04:02:24,T,T,
U,MSFT,NSDQ,208.6,209.68,40,48,04:02:24,2020-07-06,20,52,5,04:02:16,T,T,
U,MSFT,NSDQ,209.23,209.68,47,48,04:02:24,2020-07-06,20,52,5,04:02:16,T,T,

Specification Pages I'm looking at are
http://www.iqfeed.net/dev/api/docs/Level2viaTCPIP.cfm
and
http://www.iqfeed.net/dev/api/docs/Level2UpdateSummaryMessage.cfm

Most likely you are not sending an S,SET PROTOCOL. Summary messages used to be specified as "U" instead of "Z" in the default protocol of 4.9, which is the default protocol.

---

Sincerely,
Gary Stephen
DTN IQFeed Implementation Support Specialist

Doh - thanks for that.