If an error is showing up when adding a serial number to your account in Softron License Manager, below are the potential issues.

Invalid Serial Number

Error message

This serial is invalid. 

How to fix this?

There can be different causes for this:

• You typed your serial incorrectly. Prefer to use copy/paste as some characters can look alike.
• Your serial has expired. If you were generated a temporary serial, that has now expired, you won't be able to add it.