SAP Adaptor Exception

Dear All,

When I’m running my RFC form SAP Adapter in wM 6.5 SP2 getting the following exception… but i have checked SAP system… the data given as input rfc is inserted …

Pls help me to resolve this exception…

Is it the problem with webMethods or SAP R/3 RFC?

[ART.117.4002] Adapter Runtime (Adapter Service): Unable to invoke adapter service XXX.Inbound.XXXRFC.
[SAP.102.9000] JCo error: (104) RFC_ERROR_SYSTEM_FAILURE - Unable to interpret X as a number.