Hi @Asmita7
Adding a long list of choice values can create a bad user experience, imagine users should scroll down on the form to select the value they need.
There is guiding principle recommended by Servicenow that if the choice values goes beyond even 15 or 20 then create a custom table and enter these choice values as records, make this as a reference field to the custom table on the form there a lot of advantages using custom table with regards to user experience listed below
1. Shows recommended values while user types on the reference field
2. Easy to search by opening a separate window and select value
3. You can add additional attributes for reference
Also, It is easy to maintain, only disadvantage is there is a limit with regards to license if you have the quota you can create it for free as part of the subscription.
You can take these points and present these pros and cons of using choice field vs reference field to your client, I'm very sure they will go for reference field as user experience is more important factor.
Curious to hear your decision 🙂 revert if you have any questions.
If my response helps to solve your issue mark this as Helpful and Accept the Solution
