syncCredntials.ps1

$subscriptionId = ''
$resourceGroupName = ''
$factoryName = ''
$integrationRuntimeNames = @('', '')
$ErrorActionPreference = "Stop"
try{
Get-AzureRmSubscription -SubscriptionId $subscriptionId -ErrorVariable nosession
}
catch {}
if ($nosession) {
    Write-Host "Obtaining access token..."
    $rmAccount = Add-AzureRmAccount -SubscriptionId $subscriptionId
    $tenantId = (Get-AzureRmSubscription -SubscriptionId $subscriptionId).TenantId
    $tokenCache = $rmAccount.Context.TokenCache
    $cachedTokens = $tokenCache.ReadItems() `
        | Where-Object { $_.TenantId -eq $tenantId } `
        | Sort-Object -Property ExpiresOn -Descending
    $accessToken = $cachedTokens[0].AccessToken
}

foreach ($integrationRuntimeName in $integrationRuntimeNames) {
    Write-Host "Syncing the credentials for IR $integrationRuntimeName on factory $factoryName"
    $syncCredentials = "https://management.azure.com/subscriptions/$subscriptionId/resourceGroups/$resourceGroupName/providers/Microsoft.DataFactory/factories/$factoryName/integrationRuntimes/$integrationRuntimeName/syncCredentials?api-version=2018-06-01"
    Invoke-RestMethod -Method Post `
        -Uri $syncCredentials `
        -Headers @{ "Authorization" = "Bearer " + $accessToken }
}