The Help article here: https://help-2022r2.acumatica.com/(W(1))/Help?ScreenId=ShowWiki&pageid=0c5ef3eb-7743-46ab-8381-31a65d1caab4 does not indicate that Outlook PWA is supported:

OWA (Outlook Web Application) AKA Outlook on the Web is supported 

For Outlook PWA, I would suggest creating an Idea post in the Community: https://community.acumatica.com/ideas

I hope that answers the question! Please let me know if I can provide any further assistance.

Hello @manikantad18 ,

If OWA (Outlook Web Application) is supported, do you know how to install it? I'm only able to install Acumatica’s Outlook  plug in Outlook destop. 

@Dawood The instructions for installing a custom add-in for Outlook web are here: Use add-ins in Outlook - Microsoft Support

The installation worked for me, but so far I can’t get it to function in web. 

@Dawood I was able to get it working in web after Acumatica applied a fix. See post:  Outlook Add-in in web? | Community (acumatica.com)