Cannot set properties of undefined (setting 'lineNo')" error occurs in the Inventory Detail popup on a NetSuite Purchase Order, triggered by the Auto Lot Number App.

AI generated answer (using internal Slack threads):

The error "Cannot set properties of undefined (setting 'lineNo')" in the Inventory Detail popup on a NetSuite Purchase Order, triggered by the Auto Lot Number App, is likely due to an attempt to set a property on an undefined object. This typically happens when you're trying to access a property or method on an object that hasn't been initialized yet. In the context of SuiteScript, this error often occurs when trying to manipulate sublist lines or subrecords that don't exist or haven't been properly initialized. For example, if you're trying to set a value on a sublist line that hasn't been selected or created yet, you'll get this error. Here's a sample code snippet from one of the conversations that demonstrates how to properly initialize and set values on a sublist line:

javascript
var invAdjRecord = nsRecord.load({
   type: 'inventoryadjustment',
   id: context.key
});
var values = JSON.parse(context.value);

for (var itemId in values) {
   if (values.hasOwnProperty(itemId)) {
      var lineNumber = invAdjRecord.findSublistLineWithValue({
         sublistId: 'inventory',
         fieldId: 'item',
         value: itemId
      });
      if (lineNumber > -1) {
         invAdjRecord.setSublistValue({
            sublistId: 'inventory',
            fieldId: 'newquantity',
            line: lineNumber,
            value: values[itemId].quantity
         });
         // More code here...
      }
   }
}

In this code, the

findSublistLineWithValue

method is used to find the line number of the sublist line to be updated. Then, the

setSublistValue

method is used to set the new quantity on the sublist line. If the line number is not found (i.e.,

lineNumber

is -1), the script doesn't attempt to set the sublist value, thus avoiding the "Cannot set properties of undefined" error. If you're still encountering this error, you may need to review your code to ensure that all objects are properly initialized before you try to access their properties or methods. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******