Error in ECP when editing resources - booking delegates

Question

Hello,
since Exchange 2013 SP1 I get the following error when I edit the booking delegates of an resource, what could be the reason???
Client Information
User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)
CPU Class: x64
Platform: Win64
System Language: de
User Language: en-US
CookieEnabled: true
Exception Details
Date: Thu Apr 24 07:32:28 UTC+0200 2014
Message: Das Zielelement dieser Operation ist nicht gültig.
Url: https://exchange.mycompany.dom/ecp/15.0.847.32/scripts/wizardproperties.js
Line: 1
Call Stack
Dump Event
 errorMessage = Das Zielelement dieser Operation ist nicht gültig.
 errorUrl = https://exchange.mycompany.dom/ecp/15.0.847.32/scripts/wizardproperties.js
 errorLine = 1
 errorCharacter = 83858
 errorCode = 0
 actionURL =
 altKey = false
 altLeft = false
 behaviorCookie = 0
 behaviorPart = 0
 bookmarks = null
 boundElements = [object HTMLCollection]
 button = 0
 buttonID = 0
 cancelBubble = false
 clientX = 212
 clientY = 131
 contentOverflow = false
 ctrlKey = false
 ctrlLeft = false
 data =
 dataFld =
 dataTransfer = null
 fromElement = null
 keyCode = 0
 nextPage =
 offsetX = 0
 offsetY = 0
 origin =
 propertyName =
 qualifier =
 reason = 0
 recordset = null
 repeat = false
 returnValue = true
 screenX = -923
 screenY = 292
 shiftKey = false
 shiftLeft = false
 source = null
 srcElement = null
 srcFilter = null
 srcUrn =
 toElement = null
 type = error
 url =
 wheelDelta = 0
 x = 0
 y = 0
 getAttribute =
function getAttribute() {
    [native code]
 removeAttribute =
function removeAttribute() {
    [native code]
 setAttribute =
function setAttribute() {
    [native code]
Detailed Call Stack

Answer 1

Hello,
Please make sure the issue occurs when you do other operations via ecp.  I recommend you another browser to check the result.
Please try to use EMS cmdlet to change room mailbox properties to check the result.
Besides, please check if there is related error in application log.
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Cara Chen
TechNet Community Support