diff --git a/e2sim/ASN1c/E-RAB-ID.c b/e2sim/ASN1c/E-RAB-ID.c
new file mode 100644
index 0000000..afdef5f
--- /dev/null
+++ b/e2sim/ASN1c/E-RAB-ID.c
@@ -0,0 +1,79 @@
+/*****************************************************************************
+#                                                                            *
+# Copyright 2019 AT&T Intellectual Property                                  *
+#                                                                            *
+# Licensed under the Apache License, Version 2.0 (the "License");            *
+# you may not use this file except in compliance with the License.           *
+# You may obtain a copy of the License at                                    *
+#                                                                            *
+#      http://www.apache.org/licenses/LICENSE-2.0                            *
+#                                                                            *
+# Unless required by applicable law or agreed to in writing, software        *
+# distributed under the License is distributed on an "AS IS" BASIS,          *
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   *
+# See the License for the specific language governing permissions and        *
+# limitations under the License.                                             *
+#                                                                            *
+******************************************************************************/
+
+/*
+ * Generated by asn1c-0.9.29 (http://lionet.info/asn1c)
+ * From ASN.1 module "X2AP-IEs"
+ * 	found in "../../asnFiles/X2AP-IEs.asn"
+ * 	`asn1c -fcompound-names -fincludes-quoted -fno-include-deps -findirect-choice -gen-PER -no-gen-OER -D.`
+ */
+
+#include "E-RAB-ID.h"
+
+int
+E_RAB_ID_constraint(const asn_TYPE_descriptor_t *td, const void *sptr,
+			asn_app_constraint_failed_f *ctfailcb, void *app_key) {
+	long value;
+	
+	if(!sptr) {
+		ASN__CTFAIL(app_key, td, sptr,
+			"%s: value not given (%s:%d)",
+			td->name, __FILE__, __LINE__);
+		return -1;
+	}
+	
+	value = *(const long *)sptr;
+	
+	if((value >= 0 && value <= 15)) {
+		/* Constraint check succeeded */
+		return 0;
+	} else {
+		ASN__CTFAIL(app_key, td, sptr,
+			"%s: constraint failed (%s:%d)",
+			td->name, __FILE__, __LINE__);
+		return -1;
+	}
+}
+
+/*
+ * This type is implemented using NativeInteger,
+ * so here we adjust the DEF accordingly.
+ */
+asn_per_constraints_t asn_PER_type_E_RAB_ID_constr_1 CC_NOTUSED = {
+	{ APC_CONSTRAINED | APC_EXTENSIBLE,  4,  4,  0,  15 }	/* (0..15,...) */,
+	{ APC_UNCONSTRAINED,	-1, -1,  0,  0 },
+	0, 0	/* No PER value map */
+};
+static const ber_tlv_tag_t asn_DEF_E_RAB_ID_tags_1[] = {
+	(ASN_TAG_CLASS_UNIVERSAL | (2 << 2))
+};
+asn_TYPE_descriptor_t asn_DEF_E_RAB_ID = {
+	"E-RAB-ID",
+	"E-RAB-ID",
+	&asn_OP_NativeInteger,
+	asn_DEF_E_RAB_ID_tags_1,
+	sizeof(asn_DEF_E_RAB_ID_tags_1)
+		/sizeof(asn_DEF_E_RAB_ID_tags_1[0]), /* 1 */
+	asn_DEF_E_RAB_ID_tags_1,	/* Same as above */
+	sizeof(asn_DEF_E_RAB_ID_tags_1)
+		/sizeof(asn_DEF_E_RAB_ID_tags_1[0]), /* 1 */
+	{ 0, &asn_PER_type_E_RAB_ID_constr_1, E_RAB_ID_constraint },
+	0, 0,	/* No members */
+	0	/* No specifics */
+};
+