Error: “Empty invocation target! “

The error “Empty invocation target!” appears when attempting to hide sublist fields in the sales order.

Reason:

This error occurs because the field is not applied to the sales order form.

Solution:

To resolve the issue, retrieve the available sublist fields in the sales order and verify whether the field intended to be hidden is present in the form.

let sublistFields = newRecord.getSublistFields({ sublistId: 'item' }); 
log.debug('sublistFields', sublistFields); 

for (let i = 0; i < fieldsToRestrict.length; i++) {  
  let sublistField = sublist.getField({ id: fieldsToRestrict[i] });   
  try {  
    if (sublistFields.includes(fieldsToRestrict[i])) {  
      sublistField.updateDisplayType({  
        displayType: serverWidget.FieldDisplayType.HIDDEN  
      });  
    }  
  } catch (error) {  
    log.error('Error hiding field', error);  
  }  
}