Security List

Message is “Security List Request” (35=x)

SubscriberOpenYieldTR

Tag	Name	Required	Notes
320	`SecurityReqID`	Required	Client-assigned request ID
559	`SecurityListRequestType`	Required	`4`=All Securities

To retrieve tradable securities in the test environment, send a SecurityListRequest (35=x) on the Trading (-TR) session.

Do not use this in production — OpenYield has nearly 1,000,000 securities and the response will be very large. To verify a specific security, send a non-marketable limit order and inspect the acknowledgment or rejection, then cancel the order.

Subscribers send:

8=FIX.4.4 9=83 35=x 34=119 49=FLAMESTREET-TR 52=20231031-15:39:29.651 56=OPENYIELD-TR 320=1 559=4 10=050

Message is “Security List” (35=y)

OpenYieldSubscriberTR

Tag	Name	Required	Notes
320	`SecurityReqID`	Required	Echoes the request ID
322	`SecurityResponseID`	Required	OpenYield internal response ID
560	`SecurityRequestResult`	Required	`0`=Valid request
393	`TotNoRelatedSym`	Required	Total securities across all SecurityList messages
146	`NoRelatedSym`	Required	Number of securities in this message (up to 10)

Field Group

SecurityBlock

The security being traded.

Tag	Name	Required	Notes
55	`Symbol`	Required	Same value as SecurityID (48)
48	`SecurityID`	Required	Security identifier (ISIN, CUSIP, or FIGI per configuration)
22	`SecurityIDSource`	Required	`1`=CUSIP·`4`=ISIN·`A`=Bloomberg Symbol (FIGI)
460	`Product`	Conditional	`1`=Agency·`3`=Corporate·`6`=Government·`11`=MunicipalRequired on OpenYield responses; optional on subscriber messages.

OpenYield responds with a series of SecurityList (35=y) messages covering all supported securities. Use TotNoRelatedSym (393) to determine when all messages have been received.

For example:

8=FIX.4.4 9=400 35=y 34=543 49=OPENYIELD-TR 52=20231031-15:39:29.653 56=FLAMESTREET-TR 146=8 55=US00130HCH66 48=US00130HCH66 22=4 55=US00164VAD55 48=US00164VAD55 22=4 55=US00164VAE39 48=US00164VAE39 22=4 55=US00164VAF04 48=US00164VAF04 22=4 55=US00206RBH49 48=US00206RBH49 22=4 55=US00206RBK77 48=US00206RBK77 22=4 55=US00206RCP55 48=US00206RCP55 22=4 55=US00206RCQ39 48=US00206RCQ39 22=4 320=1 322=1 393=3345 560=0 10=232

8=FIX.4.4 9=400 35=y 34=544 49=OPENYIELD-TR 52=20231031-15:39:29.653 56=FLAMESTREET-TR 146=8 55=US00206RCU41 48=US00206RCU41 22=4 55=US00206RDJ86 48=US00206RDJ86 22=4 55=US00206RDK59 48=US00206RDK59 22=4 55=US00206RDQ20 48=US00206RDQ20 22=4 55=US00206RDR03 48=US00206RDR03 22=4 55=US00206RGL06 48=US00206RGL06 22=4 55=US00206RGQ92 48=US00206RGQ92 22=4 55=US00206RHJ41 48=US00206RHJ41 22=4 320=1 322=1 393=3345 560=0 10=041