Unable to interpret IDoc interface ZSHIPDEL_packageRD

Hi,

I am doing a file-xi-idoc scenerio.

I've exported my custom idoc as an xsd and modified the schema to allow for multiple idocs to be generated for each file - as per note 814393.

However I get the following error message at runtime (Call Adapter):

<SAP:Category>XIAdapter</SAP:Category>

<SAP:Code area="IDOC_ADAPTER">ATTRIBUTE_WRONG_INTF</SAP:Code>

<SAP:P1>ZSHIPDEL_packageRD</SAP:P1>

<SAP:P2 />

<SAP:P3 />

<SAP:P4 />

<SAP:AdditionalText />

<SAP:ApplicationFaultMessage namespace="" />

<SAP:Stack>Unable to interpret IDoc interface ZSHIPDEL_packageRD</SAP:Stack>

<SAP:Retry>M</SAP:Retry>

Has anyone else experienced this error?

Regards

leenor