Table Missing AL

Hi All,

I have an error on AL code. I am having Table relation whereby I want to have a look up picking the details from a customed AL table (HREmployee) that's outside my project.

Unfortunately on my Table relation line of code shows an error about missing table. When I test with a native table i.e Vendor, its working perfectly. How do I make the my project to recognise that custom table HREmployee  just like its recognising the native table so that my lookup can pick the data from HREmployee table?.