Looking at your screenshot, this NAV page has been customized. There is no field "T.I.N. No." in the VAT Entry table (which is the "Tax Entry" table - the name is displayed differently based on the locale of your NAV version.)
In the North America version of NAV, the field is the vendor table is called "Federal ID No.". I do not know about other locales, but this appears to be an issue with your custom code - so check with your partner/developer.
Answers
https://community.dynamics.com/nav/f/34/t/163317
Ashok
ArcherPoint Inc.,
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Ishwar Sharma
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In the North America version of NAV, the field is the vendor table is called "Federal ID No.". I do not know about other locales, but this appears to be an issue with your custom code - so check with your partner/developer.
Good luck!
Ron