Text Field not visible in lookup filter. WHY?

@Saurabh Kashyap

• Lookup auto-completion doesn’t work for user lookups with other dropdown lists. Auto-completion is primarily for organizations that have set up either a partner portal or customer portal.

Please check the below article:

• https://help.salesforce.com/s/articleView?id=sf.fields_lookup_limitations.htm&type=5
• https://salesforce.stackexchange.com/questions/246104/lookup-filter-is-not-showing-object-fields-to-create-a-filter
• https://help.salesforce.com/s/articleView?id=sf.fields_lookup_filters_notes.htm&type=5