You have to get you OXE Admin to take a look into this one.
This is what I can see from the provided logs:
1) RequestSingleStep transfer is issued at 12:56:03
[color=red]12:56:03.819 Trc 04541 RequestSingleStepTransfer received from [516] (00000006 IW_5216615 192.168.20.1:2902)
message RequestSingleStepTransfer
	AttributeReferenceID	8
	AttributeThisDN	'5266615'
	AttributeUserData	[2] 00 00..
	AttributeExtensions	[2] 00 00..
	AttributeReason	[2] 00 00..
	AttributeLocation	''
	AttributeOtherDN	'00156715155'
	AttributeConnID	006c020008041001
12:56:03.819 Int 04543 Interaction message "RequestSingleStepTransfer" received from 516 ("IW_5216615")
12:56:03.819  -- created: CRequest@27e2dac RequestSingleStepTransfer-IW_5216615[516]/8
12:56:03.819 +++ CIFace::Request +++
   -- new invoke
   -- replace substitution with real device
   -- thisCall by party
   -- replace group with real device
  Parsed: RequestSingleStepTransfer/RequestInitiateTransfer
  From: IW_5216615[516]/8
  Numbers: +<5216615> -<00156715155>
  Calls: 27e2fd8:1 none
  Parties: 5216615.2803e98-27e2fd8:1
           none
  Status: parsed:1 queued:0 sent:0 acked:0 preevent:0 event:0 context:0 transferred:0
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2) EventNetworkReached is received at 12:56:04
[color=red]
12:56:04.237 --- Input ---
12:56:04.237 +++ Input +++
   -- monitor: 5216615
  +++ CIFace::Event +++
    +++ Pre-event +++
      Type EventNetworkReached
      Devices: <5216615/5216615> <-/-> <-/->
      Calls: 4308/006c020008041001^4308.2803708/c:1/r:0['10 d4'H] 0/none
      Network ID: 53e1064fd4106300:0
      Parties:	d5266615/5216615.2803bf0-2803708:2/l:1/r:0/Dialing,Active,Origination[c='10 d4'H d=dynamicID : '03 d3 01 00'H]
      		X00156715155/00156715155.2803d38-2803708:2/l:2/r:0/Null,Destination[c='10 d4'H d=dynamicID : '06 1f 01 04'H]
      		none
      ANI/DNIS: <none> <00156715155>
      Cause: NewCall/22, Info: 0
      Call type: Outbound/3
      Flags: divert=0 hook=0 postCall=0 active=1 moveAll=1 callType=1 hideOtherPi=0 InternalOther=0
      PBX time stamp: 12:56:04.000
    --- Pre-event ---
    RSItched with CRequest@27e2dac RequestInitiateTransfer-IW_5216615[516]/8
     -- emulating single-step
    +++ NetworkReached +++
      SetNetworkReached: party 5216615^2803bf0-2803708:2, cause SingleStepTransfer
       -- party not bound: message cleared
    --- NetworkReached ---
    +++ Post-event +++
      Type EventNetworkReached
      Devices: <5216615/5216615> <-/-> <-/->
      Calls: 4308/006c020008041001^4308.2803708/c:1/r:0['10 d4'H] 0/none
      Network ID: 53e1064fd4106300:0
      Parties:	d5266615/5216615.2803bf0-2803708:2/l:1/r:0/NetworkReached,Active,Origination[c='10 d4'H d=dynamicID : '03 d3 01 00'H]
      		X00156715155/00156715155.2803d38-2803708:2/l:2/r:0/Null,Destination[c='10 d4'H d=dynamicID : '06 1f 01 04'H]
      		none
      ANI/DNIS: <none> <00156715155>
      Cause: SingleStepTransfer/52, Info: 0
      Call type: Outbound/3
      Flags: divert=0 hook=0 postCall=0 active=1 moveAll=1 callType=1 hideOtherPi=0 InternalOther=0
      PBX time stamp: 12:56:04.000
[/color] 
3) RequestCompleteTransfer (Internal message) is issued at 12:56:04
[color=red]
12:56:04.980 --- Input ---
12:56:05.234  Q state:RQ[0,0]
12:56:05.234 CIFace: Sent CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8
12:56:05.234 -- request was queued
12:56:05.234  -- RegisterQueue: CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8 1e2c678 RQ[0,1]
12:56:05.234  -- RegisterQueue: CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8 26653c0 RQ[0,1]
12:56:05.234 +++ Input +++
  CSTA2Server::Response(): RQ[0,1], sent: 1
  Response (1141): for CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8
   -- error reporting postponed
  FinishRequest CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8
   IFace stats: q=0 s=0
   -- recycled
   -- AckQueues(): CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8 26653c0
   -- AckQueues(): CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8 1e2c678
   -- replace substitution with real device
   -- thisCall by party
   -- replace group with real device
   -- DelayRequest: 250 msec
12:56:05.234 --- Input ---
12:56:05.484 +++ CIFace::Request +++
   -- new invoke
  Parsed: RequestSingleStepTransfer/RequestCompleteTransfer
  From: IW_5216615[516]/8
  Numbers: +<5216615> -<00156715155>
  Calls: 27e2fd8:1 2803708:2
  Parties: 5216615.2803e98-27e2fd8:1
           5216615^2803bf0-2803708:2
  Status: parsed:1 queued:0 sent:0 acked:0 preevent:0 event:0 context:0 transferred:0
  -----
   -- validate
   -- state check: ok
   Q state:RQ[0,0]
  CIFace: Sent CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8
   -- RegisterQueue: CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8 1e2c678 RQ[0,1]
   -- RegisterQueue: CRequest@27e2dac RequestCompleteTransfer-IW_5216615[516]/8 1db1848 RQ[0,1]
[/color]
4) At this point there seems to start some kind of loop: attribute "-- recycled" is seen from this point on until 12:56:11
5) At 12:56:11 " -- recycling limit reached!" is seen in logs
6) Request is rejected by OXE:
[color=red]
12:56:11.733 Trc 36002 Request rejected: error code 1141(CSTA error: operationalErrors : requestIncompatibleWithObject)
[/color]
OXE Admin should pay attention to the loop that last around 8 seconds