What is rfa::rdm::MMT_MAX_VALUE and how it's different from other MMT

Hi Team,

We are using RFA8.2 C++ API to consume marketdata and we came across the Message Model Type MMT_MAX_VALUE. What exactly this message model type means and how it's different from MMT_MARKET_PRICE, MMT_MARKET_BY_ORDER and MMT_MARKET_BY_PRICE?

Thank you in advance!

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Jirapongse

@mktdata

Thank you for reaching out to us.

MMT_MAX_VALUE represents 255.

static const rfa::common::UInt8 MMT_MAX_VALUE = 255;

Other values are:

static const rfa::common::UInt8 MMT_MARKET_PRICE		= 6;	
static const rfa::common::UInt8 MMT_MARKET_BY_ORDER		= 7;	
static const rfa::common::UInt8 MMT_MARKET_BY_PRICE		= 8;

It represents the domain type in the messages.

You can refer to the RDMUsageGuide.pdf document in the RFA package for more information.

mktdata

https://community.developers.refinitiv.com/discussion/comment/126556#Comment_126556

Hi @Jirapongse

Thank you for your quick response. I checked the document RDMUsageGuide.pdf for domain 6,7 and 8.

But didn't find anything for MMT_MAX_VALUE = 255

Could you please share some information about this and how it's different from other message model types? When to use this message model type?

Thank you

Jirapongse

Where did you get this domain? It shouldn't be used by our Real-Time feed.

Please share an XML trace file when you got this 255 domain.

mktdata

https://community.developers.refinitiv.com/discussion/comment/126563#Comment_126563

Hi @Jirapongse

We are unable to provide the XML trace file.

Could you please clarify whether it was functioning previously and then deprecated? OR

Alternatively, if it was never intended to be used by Real-Time feed, was that the case from the beginning?

Jirapongse

Yes, you should use the Real-Time feed to subscribe to the supported domain types, such as MMT_MARKET_PRICE, MMT_MARKET_BY_ORDER and MMT_MARKET_BY_PRICE.

I am not sure where you got this 255 domain from.

According to the document:

domainType values less than 128 are reserved for Domain Models. The domainType of a custom Domain Message Model must be between 128 and 255

It could be a custom domain.

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