Hi
We have a problem where some expense categories are not available to select on the D365 F&O mobile app.
I will use the Expense Category Train as an example if I make a new expense on Dynamics 365 F&O web portal I can select the Expense report Train no problem -

But if you try to add an expense via the Dynamics 365 Finance & Operations mobile app the same Expense category is not available (you can also see others which are not available on the mobile app compared to the web portal) -

I have looked at the Train expense category in the expense category setup section of the system, comparing it against one of the other categories that is visible but I cant see anything that would cause one to display and the other not.
I thought there might be something not setup in the Category setup section but I get lost here as I don't know what I'm looking at -

Any guidance you guys could give me would be greatly appreciated.
Cheers;
Median