PDS error

[Jerod]

Could someone please tell me what is wrong with this PDS Request

<Request>
<ProjectData>
<ProjectID>4</ProjectID>
<ProjectName></ProjectName><ReturnUIDs></ReturnUIDs>
</ProjectData>
</Request>

Here is the respones
<Reply>
<HRESULT>0</HRESULT>
<STATUS>38</STATUS>
<UserName>JDH</UserName>
</Reply>

4 is a valid project ID. The project Type is 1.
Error code 38 is invalid boolean. I do not understand.

Thanks in advance
Jerod