The SCCM 2016 was installed during the evaluation period. the tests were done and it is already in production and I want to put the licenses acquired. How can I install the license?
You will need to run the SCCM setup, and select the option to Perform site maintenance or reset this site.
Next you will be presented with an option to Upgrade the evaluation edition to a licensed edition and enter your SCCM license code.
Continue with the setup to apply your license code.
I do not have that option.
Strange that you don't have that option?!
Have a look at this link: https://www.anoopcnair.com/how-to-convert-sccm-cb-from-evaluation-version-to-full-version/
But try and run the SCCM setup running splash.hta located in <ConfigMgrInstallDir>\cd.latest
e.g. C:\Program Files\Microsoft Configuration Manager\cd.latest
See if that might work.