Error AIF Monitor, Cannot see xml content

Hi gurus,

We're having a problem with SAP AIF, when we access /AIF/IFMON  transation, click on any interface and then click on the structure data, the error message log attached is shown, the code message error is  class message = /AIF/ENGINE_PROXY  msgnr = 004. the text message is "

Data message F235097392DA11E5B9050000014D3FEA could not be found; editing content is not possible".

Please any suggestion, will be very apreciated.