Dear Mr Simionescu,
ASE Version 15.7 SP121 is not compatible with ASE 16.0.SP00 PL01- some bug fixes that made it into 15.7 SP121 did not make it into 16.0 SP00 PL01.
Do not manually edit any of the files generated by sapdbctrl - this is not supported - and as far as I know sapdbctrl will re-create the response file anyway - so editing will not help.
I recommend to download and install the latest sapdbctrl versio and also the ASE pacth 16.0 SP00 PL02. As far as I know it is compatible with SP121
sapdbctrl is intended to be used for patch installation (i.e. minor upgrades) as well as major upgrades (e.g. 15.7 to 16.0 )
With kind regards
Tilman Model-Bosch