migrate WSP from SP2013 to SP2019 - using power shell but getting error as '16' is not a valid version

Question

I have extracted all the WSP from SP2013 environment and want to deploy it to SP2019. I am using "Add-SPSolution" and "Install-SPSolution" commands. will this work? Or will be having any issue in future?

I am using below command

Install-SPSolution –Identity "WSP Name".wsp –WebApplication "Site Url" –GACDeployment -CompatibilityLevel "16"

and getting error as - " 16 is not a valid version "

Help Appreciated.

Answer 1

https://docs.microsoft.com/en-us/powershell/module/sharepoint-server/install-spsolution?view=sharepoint-ps

Look at -CompatibilityLevel parameter and valid values.

Valid values are:

--14

--15

--14,15