diff --git a/src/s1ap/asn1c/asnGenFiles/constr_SEQUENCE.h b/src/s1ap/asn1c/asnGenFiles/constr_SEQUENCE.h
new file mode 100644
index 0000000..a22ed3a
--- /dev/null
+++ b/src/s1ap/asn1c/asnGenFiles/constr_SEQUENCE.h
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 2003-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#ifndef	_CONSTR_SEQUENCE_H_
+#define	_CONSTR_SEQUENCE_H_
+
+#include <asn_application.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct asn_SEQUENCE_specifics_s {
+	/*
+	 * Target structure description.
+	 */
+	unsigned struct_size;	/* Size of the target structure. */
+	unsigned ctx_offset;	/* Offset of the asn_struct_ctx_t member */
+
+	/*
+	 * Tags to members mapping table (sorted).
+	 */
+	const asn_TYPE_tag2member_t *tag2el;
+	unsigned tag2el_count;
+
+	/*
+	 * Optional members of the extensions root (roms) or additions (aoms).
+	 * Meaningful for PER.
+	 */
+	const int *oms;         /* Optional MemberS */
+	unsigned roms_count;    /* Root optional members count */
+	unsigned aoms_count;    /* Additions optional members count */
+
+	/*
+	 * Description of an extensions group.
+	 * Root components are clustered at the beginning of the structure,
+	 * whereas extensions are clustered at the end. -1 means not extensible.
+	 */
+	signed first_extension;       /* First extension addition */
+} asn_SEQUENCE_specifics_t;
+
+
+/*
+ * A set specialized functions dealing with the SEQUENCE type.
+ */
+asn_struct_free_f SEQUENCE_free;
+asn_struct_print_f SEQUENCE_print;
+asn_struct_compare_f SEQUENCE_compare;
+asn_constr_check_f SEQUENCE_constraint;
+ber_type_decoder_f SEQUENCE_decode_ber;
+der_type_encoder_f SEQUENCE_encode_der;
+xer_type_decoder_f SEQUENCE_decode_xer;
+xer_type_encoder_f SEQUENCE_encode_xer;
+oer_type_decoder_f SEQUENCE_decode_oer;
+oer_type_encoder_f SEQUENCE_encode_oer;
+per_type_decoder_f SEQUENCE_decode_uper;
+per_type_encoder_f SEQUENCE_encode_uper;
+per_type_decoder_f SEQUENCE_decode_aper;
+per_type_encoder_f SEQUENCE_encode_aper;
+asn_random_fill_f  SEQUENCE_random_fill;
+extern asn_TYPE_operation_t asn_OP_SEQUENCE;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _CONSTR_SEQUENCE_H_ */