- updates on restrictions

TIPs/TIP-72.md

@@ -41,6 +41,11 @@ If one or more markets in a parlay result in cancellation, usual approach in cen
 The current implementation implements this logic. The cancelled game is included with odd `1` in the total odds calculation. If the parlay has four games with odds `[ 0.6, 0.5, 0.3, 0.7]` with total product of `0.063` and the third game is cancelled, the parlay will result in the `[ 0.6, 0.5, 1, 0.7]` with total product of `0.21`.   
 In the case of winning parlay with cancelled positions, the user obtains, as expected, less than the total winnning amount while the Parlay AMM is refunded for the cancelled positions. 
 
+-------------
+Ristricted combinations:  
+- Same game can not be included more than once, even with different positions.  
+- Same team/player/fighter can not be combined in a same parlay. Even if the games are in different dates.
+- Single motorsport game is allowed per parlay.
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 ## Test Cases