gc_Start and gc_OpenEx on two applications in one system Error

Hi,

I am testing two applications in one system using 4 channels.

I have failed to gc_start and gc_OpenEx for several tries.

First Try

- Set  Board max total call as 4 for each applications

=> gc_start failed on send starting application

Second Try

- Set Board max total call as 2 for each applications

- gc_start : success

- gc_OpenEX withe name ":N_iptB1T1:P_SIP:V_dxxxB1C1:M_ipmB1C1" on first application => Success

- gc_OpenEX withe name ":N_iptB1T3:P_SIP:V_dxxxB1C3:M_ipmB1C3" on second application => Failed

finally, I cannot use 4 channels license on two applications(even though, each application only uses 2 channels).

Is there any mistake on my approach?

Thank you in advance.