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I'm having an issue saving some arrays to multivalue attributes in a scheduled task script and I cannot see what the issue is.

Import-Module ActiveDirectory
$domains = (Get-ADForest).domains

$departments = @()
$countries = @()
$companies = @()

foreach ($domain in $domains) {
    Get-ADUser -Filter * -Server $domain -Properties co, company, department, employeeid, enabled |
        Where-Object { $NULL -ne $_.employeeid -and $_.enabled -eq $true } |
        ForEach-Object {
            if ($departments -notcontains $_.department) { $departments += $_.department }
            if ($countries -notcontains $_.co) { $countries += $_.co }
            if ($companies -notcontains $_.company) { $companies += $_.company }
$Context.TargetObject.PutEx("ADS_PROPERTY_UPDATE", "adm-CustomAttributeTextMultiValue7", $companies)
$Context.TargetObject.PutEx("ADS_PROPERTY_UPDATE", "adm-CustomAttributeTextMultiValue8", $countries)
$Context.TargetObject.PutEx("ADS_PROPERTY_UPDATE", "adm-CustomAttributeTextMultiValue9", $departments)

The issue is that when the SetInfo is called, I get the error

Exception calling "SetInfo" with "0" argument(s): "Value cannot be null. Parameter name: value" Stack trace: at , : line 19

What I don't understand is in another script I have the same PutEx and SetInfo commands using multvalue attributes and arrays and this works perfectly. I know that the array's have values, I've added log messages to the script to check the count of each array. I've tried using a single SetInfo and commenting out all but one array and corresponding PutEx's, but the same end result.

We're running Adaxes 3.13.18001.0. Both this and the working scripts are running against single user objects (different users) on the same Adaxes server, neither user objects have been excluded from Adaxes management and both are in the same domain.

Any help will be much appreciated.



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by (198k points)
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Hello Matt,

The issue occurs because at least one of the values in one of the arrays you are attempting to save to the custom multi-valued attributes is exactly $Null. You need to add a check for that to validation of the values being added to the arrays.

Also, you can use the required filter directly when calling the Get-ADUser cmdlet instead of using Where-Object. For details, have a look at the description of the -Filter and -LDAPFilter parameters in the following Microsoft article: https://docs.microsoft.com/en-us/powershell/module/addsadministration/get-aduser?view=windowsserver2019-ps.

Should you have issue updating the script, please, describe the desired behavior in all the possible details with live examples.


Thanks for that, works perfectly once I filtered out the null entries.


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