sgsn-mmeSeparationSupported  IE 

If present, this parameter indicates that the HSS separately stores SGSN Id and MME Id. A combined MME/SGSN shall not send Update-GPRS-Location at intra node inter RAT routing area update if a Separation Indicator was not received previously.
Reference: TS 29.002-f30   View

Type:

  Null

Value Length:

  1 .. 4


Containing Messages
UpdateGprsLocationRes