Hi Colin,
We have around 14K+ projects and many of them having similar project key pattern such as abc:abc-00:project_name (abc is mentioned as a sample it will be replaced by any 3 alpha-numeric characters, an unique identifier for applications), which I have explained in my other question How to map a group to a project key to restrict user's access to project/portfolio?
I learnt that it is not possible to map a project key pattern with the group or project or permission template. If there is any, please share a sample for me to investigate further.
Appreciate your help!