Have you followed all the steps related to the installation of rest-api.
Please follow the below links for the same.
In case you find any issue, do let us know.
Forum wide moderators
As per your concern, i checked again and our documentation is updated, please follow the below link for the elastic search configuration.
Once the above steps are followed and completed you need to go to
Admin -> Configure -> Catalog -> Product -> Search Mode -> Select Elastic Search
As per checking the concern in core Bagisto,
This method does not exist in our bagisto. If you are using this method in your project Product Section. You Need to define this method in you modal ProductFlat.
Once you do that you will not be able to see such issue.
In case you find any issue please do let us know.
May I confirm one more thing please,
Have you used the same slug in any other category or product while createing or editing.
Can you please share the screenshot for the issue which you are facing and also let us know in which bagisto version you are facing issue.
Asper your concern,
I will check from my end with complete installation process of B2B Marketplace module and update you for your concern.