Assistance Required in Paginated Report/SSRS Report

Hi,Heena_9980400 .I am glad to help you.

It looks like you're experiencing a problem with URL parameters that are too long!

I found documentation on this, and unfortunately it's a known limitation.

Pass a report parameter within a URL for a Power BI paginated report - Power BI | Microsoft Learn

Here are my suggestions
1. Minimize the number of parameters selected, especially those with a high character count.
2. Use short names: Use shorter names for parameters to reduce the length of the URL.
I hope the following issue will be helpful to you.

Solved: Re: Cannot view report on powerbi report server wi... - Microsoft Fabric Community

3. It seems that modifying the configuration file is also a good solution

SSRS report - Invalid URI: The Uri string is too long. - Microsoft Q&A
Resolving the Maximum Request Length Exceeded Exception in SSRS - MSSQLTips.com
If you need to modify SSRS related configuration files, please make a backup beforehand to avoid losing important files.

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Carson Jian,
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