Popup comes with error:Port undefined not found.(SBL-CFG-00171). More details follow: Port undefine

Hi all,

While validating a customizable product a popup occurs with following error:

Port undefined not found.(SBL-CFG-00171).  More details follow: Port undefined not found.(SBL-CFG-00171).(SBL-CFG-00107)

This is happening when we are adding the below code in the script present under the customizable product "PruebaAlosSB" :

temp=AddItem("$.[PruebaAlosSB]#1.["+relationship+"]#["+item_name+"]","Promociones",Descuento,"1");

Below are the declaration and definitions of the variables used above:

item_name= item.GetProperty("ObjName");

var Descuento="PruebaAlosGrandChild"(containing a product name)

relationship = GetFieldValue("Item Name");

"Promociones" is the relationship name under which the product inside Descuento is present i.e. PruebaAlosGrandChild.

Please let me know if anyone has any idea on this error.