The issue here is that the user accidentally deleted his custom fields from his post group and when trying to recreate the fields he gets a duplicate slug error.
Solution:
The reason for the error is because the group has been deleted but the individual fields have not been. The only way to delete the fields completely is by going to Toolset -> Post Fields -> Post Fields control.
With that said you can restore the fields or reuse the fields by when you are adding the fields to the group you click on the "Choose from previously created fields". You custom fields should be there.
We document known issues and their solutions in Toolset errata. Save time by checking there first and seeing if what you are facing is a known issue. This list is kept short. We do our best to resolve all known issues with every release of Toolset plugins.
Support Policy
Toolset staff will help you use the Toolset plugins correctly, provide any information you need, help troubleshoot problems and advice on best-practices.
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