moodle-tool_uploadcoursecategory
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piersharding
Duplicate Category IDs
It doesn't look like this fantastic and appreciated plugin is being maintained, but I'm going to put this "bug" here, anyway and cross my fingers.
For some reason, it allows duplicate category IDs. I thought that was a unique field, so not sure how this happens.
No, this is not a bug. What you used is the "idnumber" which is any number you can enter in Moodle to identify your own numbering, it can be duplicate; what you refer as a unique is the "id" which is actually the category ID number which you can see in Moodle, this is really unique and cannot be duplicated therefor you cannot enter it manually and is set by Moodle itself.
