Missing dataSourceId when retrieving report dataproviders

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>

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

}