I think Adabas Administration Services is being de-selected by the installer because you have not selected Adabas Manager.
I have not checked product version compatibility (I think Installer does that anyway), but, yes, Entire Net-Work is still valid. You need it to connect Adabas and Natural running on separate servers.
ADATCP is an alternative for an Entire Net-Work connection, but you must have a licensed copy of Entire Net-Work installed to use ADATCP, as they both use the same license file.
Kindly advise where did you find the referred compatibility documentation ?
As you can see, for 10.3 Adabas Administration Services component is missing, while for 10.1 Adabas component is missing … Also, for 9.10 all Adabas product family is missing …
I think the problem is that you are trying to install products into an existing Adabas installation. I believe the installation notes warn against this.
Try a clean install. If Adabas is now in c:\SoftwareAG, try c:\SoftwareAG2.