When attempting to import a solution in Dynamics 365, you encounter an error with the following message:
"The import solution must have a higher version than the existing solution it is upgrading"
You may also see a reference to error code 80048541.
This error can occur if you are trying to import a solution upgrade but the version of the solution is not higher than the currently installed solution.
When upgrading a solution, make sure the version of the solution you are importing is higher than the version that is already installed.