SyncroMSP - Modify asset custom field

gistfile1.txt

<#
.Synopsis
   Update an asset custom field
.DESCRIPTION
   To use this script, you have to update 
.NOTES
  Version:        1.0
  Author:         Alexandre-Jacques St-Jacques
  Creation Date:  13-02-2021
  Purpose/Change: Initial script development
#>

# The API token used for the request. Create a API key with permission "Assets - Edit"
$ApiToken = "abcdefg-12345678"
# Will usually be syncromsp.com
$ApiBaseURL = $env:RepairTechApiBaseURL
# Your account sub domain will magically be imported.
$ApiSubDomain = $env:RepairTechApiSubDomain

# The asset that you wish to update the custom field
# You can find the ID by looking at the end of the URL when viewing the asset.
$AssetID = "09876543"

# The custom field name to be updated
$CustomField = "Testing Custom Field"
# The value to assign to the custom field
$CustomFieldValue = "Value"


function Asset-Update-Field ($ApiToken,$Id,$CustomField,$CustomFieldValue) {
$headers = @{
    Content='application/json' 
    Authorization="Bearer $ApiToken" 
}

$payload = @"
{
  "properties": {
    "$CustomField": "$CustomFieldValue"
  }
}
"@

  $ApiPath = "/api/v1/customer_assets"
  
  $resp = try {
    Invoke-RestMethod -Method PUT "https://$($ApiSubDomain).$($ApiBaseURL)$($ApiPath)/$($AssetID)" -Headers $headers -Body "$payload" -ContentType "application/json"
  } catch {
    Write-Host "ERROR!"
    $result = $_.Exception.Response.GetResponseStream()
    $reader = New-Object System.IO.StreamReader($result)
    $reader.BaseStream.Position = 0
    $reader.DiscardBufferedData()
    $responseBody = $reader.ReadToEnd();
    Write-Host $responseBody
  }
}

Asset-Update-Field -ApiToken $ApiToken -Id $AssetID -CustomField $CustomField -CustomFieldValue $CustomFieldValue