Always annoying when something breaks.
If you see this message in the display of the DVM-143, there is an error in the software of the baby unit.
The unit needs to be reported for repair, you can do this via this link.
By filling in this form, we immediately have all the information we need to help you.
Please make sure you clearly mention that you get the "BU secid is not exist" message in the complaint description, that way our mechanics know what's wrong and can fix it quickly.
Should you have any further questions, you can always contact us via this website.
Please state the complaint clearly so that we can help you.