I'm trying to search some future RICs by using TRTH API "/Search/FuturesAndOptionsSearch". You can see the example json here.The initial request returned only 250 rows of result, so I tried to use the "@odata.nextlink". For the whole process of the example request, I requested for the url without skiptoken first, then requested urls which skiptoken='MjUw', 'NTAw', 'NzUw' and 'MTAwMA'. The total count of result RICs will always be 1089, which is same as what I can get on the website. But some RICs of the result are duplicates, and these RICs are totally random. I tried the whole process several times and the results of same requests were different. It looks like the responses do not have a certain sequence for the RICs. what can I do for this situation? By the way, I'm using python for programming.