Missing collector-substrate diode would be forward biased.

Hi,

I am attempting to simulate the following transistor in Cadence:

modni50h  (from ams H35 technology)

I am receiving the following error:

***************************************
DC Analysis `dc': V2:dc = (0 V -> 15 V)
***************************************
Important parameter values:
    reltol = 100e-06
    abstol(V) = 1 uV
    abstol(I) = 1 pA
    temp = 27 C
    tnom = 27 C
    tempeffects = all
    gmin = 1 pS
Trying `homotopy = gmin'.
Continuation method failed. Step size is too small.
Trying `homotopy = source'.

Warning from spectre at dc = 0 V during DC analysis `dc'.
    WARNING (CMI-2151): M0.M_subinst_01.xqpnp: Missing collector-substrate diode would be forward biased.
SOAC: M0.M_subinst_01.soac_m1   modni50h V(G,B): LEAVING@  -1e+06us ;

I am not sure if this is an issue with the diodes not being modeled in bsim3v3 or if I need to add an external diode? Any assistance debugging this issue would be greatly appreciated.

Thank you.