Dear amol_jagdale,
Good day! Thank you for posting your query in our community.
Per your description, you encountered error when using Power Apps.
However, I’d explain that, because this problem is related to Microsoft Power Apps, I found threads which has the similar query with you in Microsoft Power Apps Community, such as: Solved: Network Error when using Patch function: The reque... - Power Platform Community (microsoft.com).
So my suggestion is to post on dedicated Power Apps Community - Power Platform Community (microsoft.com), the members and engineers in this community are more experienced in this area. You will get a more detailed and professional answer to your problem there.
We appreciate your understanding.
Sincerely,
Jazlyn | Microsoft Community Moderator