IDC01851I "NOSORTCALL" invalid parameter for extended addressability data set.

Explanation
 User must use SORTCALL parameter in BLDINDEX command
for building alternate indexes for extended addressability data sets. 

System action
Processing for the BLDINDEX STEP/JOB Terminated. 

System programmer response
IDCBI01 

Programmer response
Specify sortcall parameter on the BLDINDEX
command to build alternate indexes for extended addressability data
set.

Source
DFSMSdfp