Delta Extraction Using MDM_CLNT_EXTR (Urgent)

Hi,

We are extracting SAP ECC Vendor and Customer data using MDM_CLNT_EXTR transaction. We have successfully extracted and loaded the initial data (Extraction in (I)nitial mode). However, when we try to extract the data in Delta mode, the extraction job is cancelled with an error message 'MESSAGE_TYPE_UNKNOWN'.

Anyone has any idea how to resolve this error? Do we need to do more configurations (in ECC or PI) before we could do a delta extraction?

Regards,

-T