What does "Wrong Unit of Measure on Invoice" mean?

  • 1
  • Question
  • Updated 1 year ago
  • Answered
I received an error message in my WebForms inbox from Loblaw that says "Wrong Unit of Measure on Invoice" What does that mean and how can I fix this problem?
Photo of FAQ


  • 9,380 Points 5k badge 2x thumb

Posted 7 years ago

  • 1
Photo of Andrew Richner

Andrew Richner

  • 330 Points 250 badge 2x thumb
This is an error generated in Loblaw's system regarding an issue with a line item you have sent to them recently in an Invoice EDI document. This error states that you have transmitted an incorrect Unit of Measure. Usually this error applies if you are shipping catch-weight orders to Loblaw and it concerns the requirement to include a weight value on each line item. You will need to make sure that you are selecting a weighted Unit of Measure from the drop-down menu on the right side of each line item and then indicating the weight of that item in the field next to that.

When you are ready to re-send, you would follow the same procedure in WebForms as when you sent this document. However it's very important to note that your invoice will be always get rejected if it uses an Invoice number that Loblaw has already received: even if the first version was itself rejected. To avoid getting your invoice rejected again, we recommend adding a small letter a to the end of your invoice number so that you can use the same invoice number for your records but at the same time make it possible for Loblaw to accept the correction.

SPS Commerce has also created a guide to understand these types of messages from Loblaw. You can access it here:
Photo of Terish Kuka

Terish Kuka

  • 60 Points

We are having this same issue.  we are getting an error saying wrong unit of measure on invoice.
We do not use the catch weight form, we use the use the invoice form.  How do we fix this?  I have attempted 4-5 times to fix this and i am not able to correct it.  thanks Terish