open TELEMAC-MASCARET The mathematically superior suite of solvers

I am simulating a small basin that rainfall is the only source of the water. I find that the rainfall-runoff module cannot be coupled with the suspended sediment. But strangely, the rainfall-runoff module can be coupled with the bed-load module.
When I test using example of rain_off in v8p5 version, I got the similar result. Once the SUSPENSION FOR ALL SANDS is set to YES, I got the same error. However, when bed-load set to Yes and suspension set to no, the program can run normally.
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VALUES OF THE TRACERS AT THE SOURCES
GIVE AS MANY VALUES AS TRACERS: 1
INSTEAD OF: 0

PLANTE: PROGRAM STOPPED AFTER AN ERROR
RETURNING EXIT CODE: 2

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MPI_ABORT was invoked on rank 0 in communicator MPI_COMM_WORLD
with errorcode 2.
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Hi
As indicated, you should give values for tracer at the sources e.g. the rain.
There is a dedicated keyword for tracer in the rain.

Regards