This is more of a tech support question, but I may be able to help.
I want to understand the problem better. Let me know if I have this right. You have an SAP system that is sending labels to the ZT410. The labels are getting cut off on the top or bottom when they are printing. You can't change the data in the formats easily.
Have you tried calibrating the labels? From the front panel menu: TOOLS -> Media/Ribbon Cal
It will feed out a couple of labels to set the true label length of the labels. That should at least make it consistent.
We have upgraded firmware to latest Firmware and check the Label length but it is different then ZM400
This is happening at most of places where we Install the printers, so we have escalated here in India to Mr. Manoj Kumar - Presale we have sent consumable rolls to him for Verification of issue, Printing is happening via Script through customized software.
Working with your pre-sales engineer is probably your best option right now. If you could modify the script, we could help. This issue is something that makes more sense to do what you are doing.