Version1 or 2 Panel types only allow Zone Test to be used from a keypad assigned to the partition where the point is assigned.
When attempting to perform Zone Test on DS7400 version 1 or 2 panels by pressing Pin + #81 the keypads return the message 'Error Please Try again'. Attempting to perform Zone Test while in single partition mode results in the same error.
DS7400 Version 3 and 4 panels do allow Zone Test to be used from a Master keypad provided Single Partition mode is selected.
For further information of the DS7400 operation see the below documents.
22232G Reference guide for DS7400 ver1 panels pg.35
28995B Reference guide for DS7400 ver2 panels pg.35