Aren't market Id's unique to a match?

[hobbyuser]

Am I not correct that market Id is unique to a match? For the bournemouth versus Brighton game that took place on 19 Sep 2017, I see two seperate market Ids. These are: 1.133562626,1.133562705

[hobbyuser]

To be clear, in my historical API download, I asked for MATCH_ODDS only. So I don't expect these two markets to be different in that way...