Hi Michael,
Have tried by changing the valid from date and happen but no luck still the same error.
Please find below image of Active Schema
Below is the screen shot of Draft Schema created by selecting Active schema & clicking on New Version icon.
The previous deployed Schema also has same subject profile like Active version.
Since the requirement is only to create new categories in same schema so why new subject profile is required.
Don't you think same subject profile should be used?
Please help with any further analysis on this.
Thanks
Regards
Upinder