CLI0549 A parcel is malformed
A parcel, probably the first parcel, in a Logon request contains an invalid parcel header (for example, length smaller than a minimum header, or length greater than the request length).
The error is detected by TDP. This error should not occur for a CLIv2 application since CLIv2 itself constructs the parcels for the Connect function.
Collect diagnostic information (including the memory dump and TDPSNAP output, if any) and contact Customer Support personnel.