USSD_Helpers.ttcn: add f_USSD_FACILITY_IE_RETURN_ERROR

Change-Id: I9f2b526cb67224cab81364cec34efd42bbb44327

1 files changed, 15 insertions, 0 deletions

diff --git a/msc/USSD_Helpers.ttcn b/msc/USSD_Helpers.ttcn
index 6a71681f..5dd4bb17 100644
--- a/msc/USSD_Helpers.ttcn
+++ b/msc/USSD_Helpers.ttcn
@@ -60,4 +60,19 @@ function f_USSD_FACILITY_IE_RETURN_RESULT(
 	return enc_SS_FacilityInformation(facility_ie);
 }
 
+function f_USSD_FACILITY_IE_RETURN_ERROR(
+	integer invoke_id := 1,
+	SS_Err_Code err_code := SS_ERR_CODE_UNEXPECTED_DATA_VALUE
+) return octetstring {
+	var SS_FacilityInformation facility_ie;
+
+	/* Encode Facility IE */
+	facility_ie := valueof(ts_SS_FACILITY_RETURN_ERROR(
+		invoke_id := invoke_id,
+		err_code := err_code
+	));
+
+	return enc_SS_FacilityInformation(facility_ie);
+}
+
 }