Error in SXMB_MONI: greater payloadMaxSize

Hi everybody,

we got a real huge IDOC. I need the payload. But in SXMB_MONI I just see at the end:

REGK::293'RFFMG:000000000007119995'CCI+E02::293'CAVE02::293'CCI++E01::260'CAVH0::260'CCI++Z15::293'SEQ1'QTY31: 1364,0000:KWH'NADIT+:::::1.::13+...(<b>size greater payloadMaxSize</b>!)'</edi>

</payloads>

Where can I increase the MaxSize for Payload?

Thanks, Regards Mario