Summary of Changes

If there is a required custom field for a specific category, then API requests do fail when articles want to be created in other categories. It reports that the field is missing even the field is only required for articles in other categories.

Testing Instructions

• Create a second category in articles manager
• Create a custom field with "Required" to yes and assign it to "Uncategorised", NOT the new one!!
• Run the following curl command (catid 2 is mostly Uncategorised in a defaul Joomla installation, replace when it is different on yours):

curl --location --request POST 'https://[your J4 website]/api/index.php/v1/content/articles' \
--header 'Content-Type: application/json' \
--header 'X-Joomla-Token: [your user token]' \
--data-raw '{"title":"Test","catid":2,"introtext":"","language":"*"}'

Actual result BEFORE applying this Pull Request

Error that the required field is missing.

Expected result AFTER applying this Pull Request

Article is created in the new category with the title test.