diff --git a/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantity.java b/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantity.java
--- a/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantity.java
+++ b/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantity.java
@@ -19,6 +19,7 @@
 package org.openbravo.erpCommon.ad_callouts;
 
 import java.math.BigDecimal;
+import java.util.List;
 
 import javax.servlet.ServletException;
 
@@ -26,6 +27,7 @@
 import org.apache.log4j.Logger;
 import org.hibernate.criterion.Restrictions;
 import org.openbravo.base.exception.OBException;
+import org.openbravo.base.weld.WeldUtils;
 import org.openbravo.dal.core.OBContext;
 import org.openbravo.dal.service.OBCriteria;
 import org.openbravo.dal.service.OBDal;
@@ -99,6 +101,16 @@
         info.addResult("inpqty", qty);
       } else if (windowId.equals(ADWINDOW_ManageRequisition)) {
         info.addResult("inpqty", qty);
+      } else {
+        // inject hooks this way because this class is not instantiated using weld framework
+        List<OperativeQuantity_To_BaseQuantityHook> operativeQtyHooks = WeldUtils
+            .getInstances(OperativeQuantity_To_BaseQuantityHook.class);
+        for (OperativeQuantity_To_BaseQuantityHook hook : operativeQtyHooks) {
+          String fieldName = hook.getFieldName(windowId, tableId);
+          if (fieldName != null) {
+            info.addResult(fieldName, qty);
+          }
+        }
       }
     }
   }
diff --git a/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantityHook.java b/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantityHook.java
new file mode 100644
--- /dev/null
+++ b/src/org/openbravo/erpCommon/ad_callouts/OperativeQuantity_To_BaseQuantityHook.java
@@ -0,0 +1,31 @@
+/*
+ *************************************************************************
+ * The contents of this file are subject to the Openbravo  Public  License
+ * Version  1.1  (the  "License"),  being   the  Mozilla   Public  License
+ * Version 1.1  with a permitted attribution clause; you may not  use this
+ * file except in compliance with the License. You  may  obtain  a copy of
+ * the License at http://www.openbravo.com/legal/license.html 
+ * Software distributed under the License  is  distributed  on  an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
+ * License for the specific  language  governing  rights  and  limitations
+ * under the License. 
+ * The Original Code is Openbravo ERP. 
+ * The Initial Developer of the Original Code is Openbravo SLU 
+ * All portions are Copyright (C) 2018 Openbravo SLU 
+ * All Rights Reserved. 
+ * Contributor(s):  ______________________________________.
+ ************************************************************************
+ */
+package org.openbravo.erpCommon.ad_callouts;
+
+public abstract class OperativeQuantity_To_BaseQuantityHook {
+
+  /**
+   * @param windowId
+   *          window ID from where the callout was triggered
+   * @param tableId
+   *          the table associated with the window
+   * @return the field name that should be updated if any, null otherwise
+   */
+  public abstract String getFieldName(String windowId, String tableId);
+}