Collinearity (Ommitted observations)

[Sonwabile Mbuma]

Good day, I am new to STATA. How do I resolve or interpret the result that says "awfactw omitted because of collinearity" (awtactw is wealth index)? The command was reg v364 i. awfactw , where v364 is modern use of contraceptives by women. Thank you.

[Andrew Musau]

Can you show the result of

tab  awfactw