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how to create Search layout for lookup field?
Here is two lookup field, based on 1st field value ,if we serachd number in 2nd field want to show releted number of list based on value that we put in 1st field.
You need to setup related lookup filters.
Please refer the below articles.
https://trailhead.salesforce.com/content/learn/projects/customize-a-salesforce-object/create-lookup-filters
If this helps, Please mark it as best answer
Thanks!!
Can you share the lookup filter condition.?