PAPI - Error Response in SAP MII

Hi All,

I am using SAP MII 15.0 SP4 and I am trying to release the Order using SAP ME PAPI "ShopOrderRelease".

I am able to trace the success response.But Sometimes the service throws the error as "Material is not valid" like that,I cant able to trace the exact error.Catch action block also not able to give the error. Can anyone please help so that I can get the error response also?.

Regards

G.Partheeban