Quality Issues

If you post a couple of samples of rejected assets here you will receive useful advice from members of the community.

(...) can any one help me in this regards how to avoid that kind of rejections?

By @Muhammad Rehman

Check your assets at 100% and correct any error you see.

You will need to post one of your refused assets in the quality as submitted. Please add also the refusal reason (only the header).

If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html

You will need to post an example here in order to get some advice.