Item EFF value is not fetched via Order Management Extension Groovy Script

Summary:

Item EFF value is not fetched via Order Management Extension Groovy Script

Content (please ensure you mask any confidential information):

Attached is the Groovy script which is not fetching Item EFF details :-
/*

Extension Name : Default Requested Arrival Date from Item Street Date

Default:
Requested Arrival Date = Street Date - 3 calendar days.

*/

import oracle.apps.scm.doo.common.extensions.ValidationException;
import oracle.apps.scm.doo.common.extensions.Message;
import java.util.ArrayList;
import java.util.Calendar;

List<Message> messages = new ArrayList<Message>();

final String REQUIRED_ITEM_CLASS = "Order Retail";
final String EFF_CONTEXT_CODE = "Card Details";
final int ARRIVAL_OFFSET_DAYS = 3;