Second Life of a Hungarian SharePoint Geek

April 20, 2016

Handling PSI Errors in PowerShell Scripts

Filed under: PowerShell, PS 2013, PSI — Tags: , , — Peter Holpar @ 22:03

Recently I work pretty much with PSI calls from PowerShell, to automate such administrative tasks, that are not available in the Project Server Client Object Model, like setting the rules of graphical indicators for the custom fields (see full code here). When using such code, sooner or later you receive an PSI exception, either due to lack of data, an invalid data, or simply because the entity you are working with are not checked out to you.

For example, if you call the CreateCustomFields as shown in the former post:

$svcPSProxy.CreateCustomFields($customFieldDataSet, $false, $true)

you may receive a PSI error that is displayed by default so in PowerShell:

Exception calling "CreateCustomFields" with "3" argument(s):
"ProjectServerError(s) LastError=CustomFieldLowerOrderBitsOutOfRange
Instructions: Pass this into PSClientError constructor to access all error
At line:1 char:1
+ $svcPSProxy.CreateCustomFields($customFieldDataSet, $false, $true)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : SoapException

To display the details of the error, I’ve implemented the error handling similar to the one you find in several PSI-related C# article on MSDN (see this one, for example):

Try {
    $svcPSProxy.CreateCustomFields($customFieldDataSet, $false, $true)
Catch [System.Web.Services.Protocols.SoapException] {
    $ex = $_.Exception
    $clientError = New-Object Microsoft.Office.Project.Server.Library.PSClientError($ex)   
    $psiErrors = $clientError.GetAllErrors()
    $psiErrors | % {
        $err = $_
        Write-Host ([int]$err.ErrId) $err.ErrName
        For($i = 0; $i -lt $err.ErrorAttributes.Length; $i++) {
            Write-Host $err.ErrorAttributeNames()[$i] $err.ErrorAttributes[$i];

In my case, the specific error information is displayed as error code – error name pairs, like:

11521 CustomFieldMaskDoesNotMatchEntityType
11522 CustomFieldLowerOrderBitsOutOfRange

Note 1: I typically omit this kind of error handling from my code posted here on the blog just not to disturb you with details that are not relevant to the problem discussed actually in the post. It may be OK for you to run the code as it is posted as long as there is no error, however if an exception is thrown, it is good to know how to access the details of the problem. Alternatively, you can use Fiddler to capture the server response, and check the raw XML for the error information.

Note 2: A comprehensive list of PSI error codes is available here, including a short description for each error type. See the Microsoft.Office.Project.Server.Library.PSErrorID enumeration as well.


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