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Article ID: 134139, created on Jun 11, 2019, last review on Jun 11, 2019

  • Applies to:
  • Operations Automation 7.0
  • Operations Automation 7.1
  • Operations Automation 7.3
  • Operations Automation 7.4
  • Operations Automation 6.0
  • Business Automation 7.0


While synchronization of Office 365 the following error is thrown:

+----------+ (User with login '__login__' already exists.)

in sitelog:

2017-02-14 17:20:00,362 [  54] ERROR aps_endpoint: Outgoing request 56f114ab-c910-47ef-8fdd-40f69f30f1f3: response error
System.Net.WebException: The remote server returned an error: (500) Internal Server Error.
   at System.Net.HttpWebRequest.GetResponse()
   at Parallels.APSCommon.WebApi.ApsApi.ApsContainerBase.GetResponseInternal(HttpRequest request)
2017-02-14 17:20:00,362 [  54] DEBUG aps_endpoint: Outgoing request 56f114ab-c910-47ef-8fdd-40f69f30f1f3: response (484.3683ms): 500 (Internal Server Error) body:
    "error": "Plesk.ErrorHandling.UserManagement.LoginAlreadyExists",
    "message": "User with login '__login__' already exists.",
        "login": ""
    "pkgId": "448a25a3-2830-4038-a0d2-d2df08c0d3d3",
    "packageId": "448a25a3-2830-4038-a0d2-d2df08c0d3d3",
    "http_request": "POST /pa/rest/pa-service-user"


The user already exist in POA database and added as admin user from CCP or staff memebers


Rename the username from CCP and resynchronize subscriptions as per Cannot create a mailbox in POA Customer CP: "Service user with login 'name' already exists".


  1. It is possible to change user's login name using PBA API method UserUpdate_API which described in API documentation. Please also check the example xml.

  2. The second way was implemented in OA since 7.0 version:

    • In Provider's Operations CP > System > Settings > Enable/Disable CCP v2 > Customers tab
    • Choose Any in Ownership drop menu > Enter Staff member's Vendor name and click Search > Check it and click Enable CCPv2 button
    • Enter the user CCPv2 > Users tab > Search staff member > Click edit > Change Email (To Sign In) > OK (Field Personal Email is not required to change).

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