2443085 - SAP Contact Center/CRM Integration stopped working (ready/not ready grayed out)

• Ready/Not Ready buttons are grayed out
• OII logs display the 403 errors like:
  "ProtocolError
  System.Net.WebException: The request failed with HTTP status 403: Forbidden.
     at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
     at System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult asyncResult)
     at ICIEventClient.IciEventClient.EnduserChanged(IAsyncResult asyncResult)
     at ChatLib.SubChanged.Notified(IAsyncResult asyncResult)
  19:36:26.241 TRC> Invalid.Unsubscribe:  user=  appUrl=http://XXX.XX.XX.123:[PORTNUMER]/sap..." where the appUrl is the URL/host of the CRM system and the Remote=XXX.XX.XX.321  URL=/OII/HA.aspx is the SAP Contact Center Integration VU IP address.
• IPCONFIG at the CRM system may reveal some inportant informatin like packt drops as seen in the below example:
  

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• SAP Contact Center
• SAP Customer Relationship Management (CRM)
• SAP enhancement package for SAP Customer Relationship Management
• SAP enhancement package for SAP CRM, version for SAP HANA

SAP Contact Center, on-premise edition all versions ; SAP Customer Relationship Management 7.0 ; SAP Customer Relationship Management 7.0 on SAP enhancement package 1 for SAP NetWeaver 7.0 ; SAP HANA 1.0, platform edition ; SAP enhancement package for SAP CRM all versions

Business Communication Management 7.0, Integration, Telephony, ICI, CCI, CCtr, MAP_SUBSCRIBE_URL, no integration, broken integration, ready/not ready, , KBA , CRM-CCI , Contact Center Infrastructure , CRM-IC-CHA-TEL , Telephony Integration , CRM-BF-CHA-TEL , obsolete: Telephony Integration , Problem