From Junos OS Release 20.4R1 onwards, the term gprs from all the configuration statements and operational commands has been removed/deprecated for GTP and SCTP.

As a part of this change:

• Deprecated the [edit security gprs] hierarchy-level and all the configuration under this hierarchy-level.
• All the configuration statements previously available under the [edit security gprs gtp] hierarchy-level are now available under the [edit security gtp] hierarchy-level.
• All the configuration statements previously available under the [edit security gprs sctp] hierarchy level are now available under the [edit security sctp] hierarchy-level.
• For default applications like junos-gprs-gtp and junos-gprs-sctp, you need not remove the term gprs.

For Junos OS Release 20.3 or previous releases, use [edit security gprs] hierarchy-level.

More Read : GTP and SCTP traffic User Guide