Description
The “gform_form_not_found_message” filter in Gravity Forms allows the default form message, “Oops! We could not locate your form.” to be changed.
Usage
add_filter( 'gform_form_not_found_message', 'your_function_name', 10, 2 );
Parameters
Example
add_filter( 'gform_form_not_found_message', 'change_message', 10, 2 ); function change_message( $message, $id ){ return "We could not find the form with id " . $id; }
Placement
Your code snippet should be placed in the functions.php file of your active theme.
Source Code
This filter is located in GFFormDisplay::get_form() in gravityforms/form_display.php.