Missing dataSourceId when retrieving report dataproviders

Question

Hi,
I'm writing script that is retrieving information about reports from CMC and I have some issues with retrieving data provider details.
For some reason, my script is not able to retrieve dataSourceId in some reports, it's empty:
[DBG]: (...) >> $dpDetails.dataprovider
id           : DP0
name         : Query 1
dataSourceId :
updated      : 2014-08-06T08:38:27.000+02:00
duration     : 0
isPartial    : False
rowCount     : 0
flowCount    : 1
dictionary   : @{expression=System.Object[]}
query        : SELECT DISTINCT (...)
It appears on about 1 per 5 reports. I've checked few of them, I was able to edit data provider, add new objects from universe, refresh report. I was able to open universe with universe design tool (using the same credentials).
I've checked now using chrome advanced restfull client, result is the same:
URL: http://serverName:6405/biprws/raylight/v1/documents/5603515/dataproviders/DP0
Response:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<dataprovider>
<id>
DP0 
</id>
<name>
Query 1 
</name>
<dataSourceId />
<updated>
2014-08-06T09:02:15.000+02:00 
</updated>
<duration>
0 
</duration>
<isPartial>
false 
</isPartial>
<rowCount>
0 
</rowCount>
<flowCount>
1 
</flowCount>
<dictionary>
<expression qualification="Dimension" dataType="String">
<id>
DP0.DO2b3 
</id>
What could be the source of the issue?
Many thanks and regards
Part of my code used to retrieve DP details:
# Send any GET request, returns results
Function GetResults($logonToken, $contentLocale, $URL)
    Write-Verbose "GetResults $logonToken, $contentLocale, $URL"
    # Header
    $headers = @{ "X-SAP-LogonToken" = $logonToken ;
              "Accept"           = "application/json" ;
              "Content-Type"     = "application/json" ;
              "X-SAP-PVL"        = $contentLocale
    # GET
    $result = (Invoke-RestMethod -Method Get -Uri $URL -Headers $headers)
    return ,$result
# Find dataproviders used by report
Function GetDataProviders($logonToken, $contentLocale, $URL, $reportID)
    $reportUrl = $URL + "/raylight/v1/documents/" + $reportID
    $result = (GetResults $logonToken $contentLocale ($reportUrl + "/dataproviders"))
    Write-Verbose $result.dataproviders
    return $result
# Get given dataprovider details information
Function GetDataProviderDetails($logonToken, $contentLocale, $URL, $reportID, $dataProvider)
    $reportUrl = $URL + "/raylight/v1/documents/" + $reportID
    $result = (GetResults $logonToken $contentLocale ($reportUrl + "/dataproviders/" + $dataProvider))
    return $result

Answer 1

Hello again Howard,
I am unable to reproduce the issue that you mentioned of with .unv webi docs migrated from 4.0 SP2 to 4.1 SP05.
Below is a response of get dataproviders of a .unv webi document that I created in 4.0 SP2 and migrated to 4.1 SP05.
[GET] http://{host}:{port}/biprws/raylight/v1/documents/33198/dataproviders
header:Accept = application/xml
header:X-SAP-LogonToken = "{server}:6400@{3&2=33222,U3&2
RESPONSE:
header:Date = Mon, 16 Feb 2015 08:35:09 GMT
header:Content-Length = 322
header:Content-Type = application/xml
header:Server = Apache-Coyote/1.1
meta:Status = HTTP/1.1 200 OK
meta:HttpCode = 200
meta:Content = <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<dataproviders>
    <dataprovider>
        <id>DP0</id>
        <name>Query 1</name>
        <dataSourceId>5148</dataSourceId>
        <dataSourceType>unv</dataSourceType>
        <updated>2015-02-16T07:34:45.000+01:00</updated>
    </dataprovider>
</dataproviders>
Could you please let us know what is the status on your side and help close this discussion in case you dont face the issue anymore?
Thanks & Regards,
Saritha