EM7455: LTEREJDELAY not found in AT!CUSTOM

How do I set the LTEREJDELAY on EM7455?

This option is mentioned in the reference document but it is not available in the AT!CUSTOM=? result.
AT!CUSTOM=?
!CUSTOM:
“GPSENABLE”
“GPSLPM”
“GPIOSARENABLE”
“GPSSEL”
“GPSREFLOC”
“IMSWITCHHIDE”
“IMCONFIG”
“IPV6ENABLE”
“WAKEHOSTEN”
“SIMHOTSWAPDIS”
“CFUNPERSISTEN”
“QMIDETACHEN”
“UIM2ENABLE”
“NETWORKNAMEFMT”
“SIMLPM”
“USBSERIALENABLE”
“PCSCDISABLE”
“DHCPRELAYENABLE”
“FLOWNOTIDISABLE”
“FASTENUMEN”
“CSVOICEREJECT”
“IPCHANNELRATEEN”
“SINGLEAPNSWITCH”
“DGENABLE”
“TXONINDICATION”
“SUBNETMSKENABLE”
“ICMPINTSRVDIS”

“LTEREJDELAY”—Set delay before LTE attach requests are sent after TAU or
service request rejection.
:
• 0–255 = Delay in 10 msec units. (e.g. 10=100 msec)
• Actual range is 0–2.55 sec
• Delay is cancelled if RRC connection is released early.
• Suggested value (if delay is being enabled) is 50 (500 msec). Adjust the
value as necessary based on testing.

ATI
Manufacturer: Sierra Wireless, Incorporated
Model: EM7455
Revision: SWI9X30C_02.33.03.00 r8209 CARMD-EV-FRMWR2 2019/08/28 20:59:30
MEID: A00000AC719956
ESN: 12800668567, 800A3397
IMEI: 359073061394304
IMEI SV: 20
FSN: LF833224780210
+GCAP: +CGSM

AT!GSTATUS?
!GSTATUS:
Current Time: 80295 Temperature: 36
Reset Counter: 1 Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B4 LTE bw: 20 MHz
LTE Rx chan: 2100 LTE Tx chan: 20100
LTE CA state: NOT ASSIGNED
EMM state: Registered Normal Service
RRC state: RRC Idle
IMS reg state: Full Srv IMS mode: Normal

PCC RxM RSSI: -66 RSRP (dBm): -93
PCC RxD RSSI: -67 RSRP (dBm): -94
Tx Power: – TAC: 2F05 (12037)
RSRQ (dB): -6.3 Cell ID: 00B8160C (12064268)
SINR (dB): 20.8

I saw in the “4117727 AirPrime EM-MC74xx AT Command Reference r4.pdf”, It has removed the “LTEREJDELAY” option.

Thank you!
What is the default value for this? Is there any alternate command to change it?

This is not needed and you cannot change it.