10.17.3.1. Query whether the required protective parameters have been set
DIS-SBCSU:STNO=7140;
or
DIS-SDAT:STNO=7140,TYPE=SUBDATA;
Attributes already set can be found either under the
SUBSCRIBER ATTRIBUTES (AMO SDAT) section of the DIS-SBCSU output or
under the ATTRIBUTES section of the DIS-SDAT output.