A lower software version may be run using a higher version license by creating a text file named level.txt within the installation folder of the earlier product version. However, this does not apply to web-activated licenses which are not compatible with the previous conventional licenses (therefore, for example, the SAP2000 V16 web-activated license cannot be used to run SAP2000 V15).

Level.txt file

The level.txt text file should have two lines, described as follows:

...