Unable to recognize augment

network-topology-pcep.yang

grouping update-lsp-args {
uses lsp-id;

container arguments {
leaf administrative

{ type boolean; default true; }

uses pcep:path-definition;

uses lsp-metadata;
}
}

rpc update-lsp {
input

{ uses ont:network-topology-reference; uses update-lsp-args; }

output

{ uses operation-result; }

}

augmentation: odl-pcep-ietf-stateful02.yang

augment "/topo:update-lsp/topo:input/topo:arguments" {
leaf operational

{ type boolean; }

}

is generating null values in documentation:

https://jenkins.opendaylight.org/bgpcep/job/bgpcep-nightly/lastSuccessfulBuild/artifact/target/staging/pcep-parent/pcep-ietf-stateful02/odl-pcep-ietf-stateful02.html (Augments)

The augmented object is generated properly, but testing shows that the augmented part is probably not recognized by restconf.

<operational xmlns="urn:opendaylight:params:xml:ns:yang:pcep:crabbe:stateful:02">true</operational>