Error 42501 permission denied for schema

[akp geek <akpgeek@xxxxxxxxx>]

Dear all

I have 2 schemas , schema1 and schema 2. 

1. GRANT USAGE ON SCHEMA schema1 TO schema2;

I am trying to create a function in shema2, In that function I need to access some tables from schema1.

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I am getting the following error when I compile the function

Search path set to schema2,schema1,public

Can you please help? Appreciate your time

Regards