the-additional-information-tab.php

/**
 * Check if product has attributes, dimensions or weight to override the call_user_func() expects parameter 1 to be a valid callback error when changing the additional tab.
 */
function wb_woo_rename_tabs( $tabs ) {

	global $product;

	if ( $product->has_attributes() || $product->has_dimensions() || $product->has_weight() ) { // Check if product has attributes, dimensions or weight.
		$tabs['additional_information']['title'] = __( 'Product Data' );    // Rename the additional information tab.
	}

	return $tabs;

}
add_filter( 'woocommerce_product_tabs', 'wb_woo_rename_tabs', 98 );