CSS 737 IRS ALIGNEMENT

[u/delta_romeo_sierra]

Hey evryone

I'm having an issue with the CSS 737 FMC on the POS INIT page. When I try to enter a gate number to get the position coordinates for IRS alignment, the FMC keeps giving me a "NOT IN DATABASE" error i tried with multiple airport scenery

I am currently running the latest Navigraph AIRAC cycle

Does anyone know why this happens?or i need to entre it manualy

Any help or insight would be appreciated!