@Swati gupta Maximum number of Show fields in each task is 50, that a limitation from Gainsight.

Hey @Swati gupta, thank you or your post. Let me quickly loop in our Product Manager to clarify this give you a rock solid answer/solution to your question. 

Hi @Swati gupta 

Currently we can pull only 50 fields in one Fetch task. So if we need more than 50 fields we need to create one more fetch task and have to Join.

Ex: lets consider you are using MDA Company Object

Fetch one Show fields should be: Company ID, the next 49 fields what ever you want to add

Fetch two Show fields should be: Company ID, another fields.

Merge: Fetch one with Fetch two use “Inner Join” as a Join Condition and choose all the fields from fetch one and choose all the fields(Except Company Id from Fetch two)

Hope this will resolve the issue for now.

Thanks.