Online publishing of research journals in Urdu can present a number of challenges, including:

1. Limited online presence: There may be fewer online platforms available for publishing research in Urdu compared to those available for research published in other languages. This can make it more difficult for researchers to find an appropriate outlet for their work.

2. Limited access to online content: Some readers may have limited access to the internet or may have difficulty accessing online content due to language barriers or other issues. This can limit the reach and impact of research published online in Urdu.

3. Lack of standardization: There may be a lack of standardization in the formatting and presentation of online research in Urdu, which can make it more difficult for readers to access and understand the content.

4. Limited support for Urdu language processing: There may be limited support for editing, proofreading, and other language processing tasks in Urdu for online publication, which can make it more challenging for researchers to prepare their work for publication.

5. Copyright issues: There may be difficulties related to copyright and intellectual property when publishing research online in Urdu, particularly if the research is being published in multiple languages or if it is being made available for free on the internet.

Overall, it is important for researchers to be aware of these challenges and to take steps to address them in order to ensure that their work is widely accessible and has a strong impact.