diff --git a/configs/open5gs/udm.yaml.in b/configs/open5gs/udm.yaml.in
index e1486c06a..1f9fa2223 100644
--- a/configs/open5gs/udm.yaml.in
+++ b/configs/open5gs/udm.yaml.in
@@ -72,60 +72,48 @@ sbi:
       cert: @sysconfdir@/open5gs/tls/udm.crt
 
 #
-# o Generate the private key as below.
-#   $ openssl genpkey -algorithm X25519 -out /etc/open5gs/hnet/curve25519-1.key
-#   $ openssl ecparam -name prime256v1 -genkey -conv_form compressed -out /etc/open5gs/hnet/secp256r1-2.key
+#  <Home Network Public Key>
 #
-# o The private and public keys can be viewed with the command.
-#   The public key is used when creating the SIM.
-#   $ openssl pkey -in /etc/open5gs/hnet/curve25519-1.key -text
-#   $ openssl ec -in /etc/open5gs/hnet/secp256r1-2.key -conv_form compressed -text
+#  o Generate the private key as below.
+#    $ openssl genpkey -algorithm X25519 -out /etc/open5gs/hnet/curve25519-1.key
+#    $ openssl ecparam -name prime256v1 -genkey -conv_form compressed -out /etc/open5gs/hnet/secp256r1-2.key
 #
-# hnet:
-#    o Home network public key identifier(PKI) value : 1
-#      Protection scheme identifier : ECIES scheme profile A
-#    - id: 1
-#      scheme: 1
-#      key: /etc/open5gs/hnet/curve25519-1.key
+#  o The private and public keys can be viewed with the command.
+#    The public key is used when creating the SIM.
+#    $ openssl pkey -in /etc/open5gs/hnet/curve25519-1.key -text
+#    $ openssl ec -in /etc/open5gs/hnet/secp256r1-2.key -conv_form compressed -text
 #
-#    o Home network public key identifier(PKI) value : 2
-#      Protection scheme identifier : ECIES scheme profile B
-#    - id: 2
-#      scheme: 2
-#      key: /etc/open5gs/hnet/secp256r1-2.key
+#  o Home network public key identifier(PKI) value : 1
+#    Protection scheme identifier : ECIES scheme profile A
+#  udm:
+#    hnet:
+#      - id: 1
+#        scheme: 1
+#        key: /etc/open5gs/hnet/curve25519-1.key
 #
-#    o Home network public key identifier(PKI) value : 3
-#      Protection scheme identifier : ECIES scheme profile A
-#    - id: 3
-#      scheme: 1
-#      key: /etc/open5gs/hnet/curve25519-1.key
+#  o Home network public key identifier(PKI) value : 2
+#    Protection scheme identifier : ECIES scheme profile B
+#  udm:
+#    hnet:
+#      - id: 2
+#        scheme: 2
+#        key: /etc/open5gs/hnet/secp256r1-2.key
 #
-#    o Home network public key identifier(PKI) value : 4
-#      Protection scheme identifier : ECIES scheme profile B
-#    - id: 4
-#      scheme: 2
-#      key: /etc/open5gs/hnet/secp256r1-2.key
+#  o Home network public key identifier(PKI) value : 3
+#    Protection scheme identifier : ECIES scheme profile A
+#  udm:
+#    hnet:
+#      - id: 3
+#        scheme: 1
+#        key: /etc/open5gs/hnet/curve25519-1.key
 #
-hnet:
-  - id: 1
-    scheme: 1
-    key: @sysconfdir@/open5gs/hnet/curve25519-1.key
-  - id: 2
-    scheme: 2
-    key: @sysconfdir@/open5gs/hnet/secp256r1-2.key
-  - id: 3
-    scheme: 1
-    key: @sysconfdir@/open5gs/hnet/curve25519-3.key
-  - id: 4
-    scheme: 2
-    key: @sysconfdir@/open5gs/hnet/secp256r1-4.key
-  - id: 5
-    scheme: 1
-    key: @sysconfdir@/open5gs/hnet/curve25519-5.key
-  - id: 6
-    scheme: 2
-    key: @sysconfdir@/open5gs/hnet/secp256r1-6.key
-
+#  o Home network public key identifier(PKI) value : 4
+#    Protection scheme identifier : ECIES scheme profile B
+#  udm:
+#    hnet:
+#      - id: 4
+#        scheme: 2
+#        key: /etc/open5gs/hnet/secp256r1-2.key
 #
 #  <SBI Server>
 #
@@ -309,6 +297,25 @@ hnet:
 #      delegated: no
 #
 udm:
+    hnet:
+      - id: 1
+        scheme: 1
+        key: @sysconfdir@/open5gs/hnet/curve25519-1.key
+      - id: 2
+        scheme: 2
+        key: @sysconfdir@/open5gs/hnet/secp256r1-2.key
+      - id: 3
+        scheme: 1
+        key: @sysconfdir@/open5gs/hnet/curve25519-3.key
+      - id: 4
+        scheme: 2
+        key: @sysconfdir@/open5gs/hnet/secp256r1-4.key
+      - id: 5
+        scheme: 1
+        key: @sysconfdir@/open5gs/hnet/curve25519-5.key
+      - id: 6
+        scheme: 2
+        key: @sysconfdir@/open5gs/hnet/secp256r1-6.key
     sbi:
       - addr: 127.0.0.12
         port: 7777
diff --git a/configs/sample.yaml.in b/configs/sample.yaml.in
index 96a484622..14345bd51 100644
--- a/configs/sample.yaml.in
+++ b/configs/sample.yaml.in
@@ -14,14 +14,6 @@ sbi:
       key: @build_configs_dir@/open5gs/tls/testclient.key
       cert: @build_configs_dir@/open5gs/tls/testclient.crt
 
-hnet:
-  - id: 1
-    scheme: 1
-    key: @build_configs_dir@/open5gs/hnet/curve25519-1.key
-  - id: 2
-    scheme: 2
-    key: @build_configs_dir@/open5gs/hnet/secp256r1-2.key
-
 parameter:
 #    no_nrf: true
 #    no_scp: true
@@ -264,6 +256,13 @@ ausf:
         port: 7777
 
 udm:
+    hnet:
+      - id: 1
+        scheme: 1
+        key: @build_configs_dir@/open5gs/hnet/curve25519-1.key
+      - id: 2
+        scheme: 2
+        key: @build_configs_dir@/open5gs/hnet/secp256r1-2.key
     sbi:
       - addr: 127.0.0.12
         port: 7777
diff --git a/lib/sbi/context.c b/lib/sbi/context.c
index 0156359d8..d54443417 100644
--- a/lib/sbi/context.c
+++ b/lib/sbi/context.c
@@ -203,7 +203,6 @@ static int ogs_sbi_context_validation(
         }
     }
 
-
     return OGS_OK;
 }
 
@@ -703,82 +702,6 @@ int ogs_sbi_context_parse_config(
                             YAML_SEQUENCE_NODE);
                 }
             }
-        } else if (!strcmp(root_key, "hnet")) {
-            ogs_yaml_iter_t hnet_array, hnet_iter;
-            ogs_yaml_iter_recurse(&root_iter, &hnet_array);
-            do {
-                uint8_t id = 0, scheme = 0;
-                const char *filename = NULL;
-
-                if (ogs_yaml_iter_type(&hnet_array) ==
-                        YAML_MAPPING_NODE) {
-                    memcpy(&hnet_iter, &hnet_array,
-                            sizeof(ogs_yaml_iter_t));
-                } else if (ogs_yaml_iter_type(&hnet_array) ==
-                    YAML_SEQUENCE_NODE) {
-                    if (!ogs_yaml_iter_next(&hnet_array))
-                        break;
-                    ogs_yaml_iter_recurse(&hnet_array,
-                            &hnet_iter);
-                } else if (ogs_yaml_iter_type(&hnet_array) ==
-                    YAML_SCALAR_NODE) {
-                    break;
-                } else
-                    ogs_assert_if_reached();
-
-                while (ogs_yaml_iter_next(&hnet_iter)) {
-                    const char *hnet_key =
-                        ogs_yaml_iter_key(&hnet_iter);
-                    ogs_assert(hnet_key);
-                    if (!strcmp(hnet_key, "id")) {
-                        const char *v = ogs_yaml_iter_value(&hnet_iter);
-                        if (v) {
-                            if (atoi(v) >= 1 && atoi(v) <= 254) id = atoi(v);
-                        }
-                    } else if (!strcmp(hnet_key, "scheme")) {
-                        const char *v = ogs_yaml_iter_value(&hnet_iter);
-                        if (v) {
-                            if (atoi(v) == 1 || atoi(v) == 2)
-                                scheme = atoi(v);
-                        }
-                    } else if (!strcmp(hnet_key, "key")) {
-                        filename = ogs_yaml_iter_value(&hnet_iter);
-                    } else
-                        ogs_warn("unknown key `%s`", hnet_key);
-                }
-
-                if (id >= OGS_HOME_NETWORK_PKI_VALUE_MIN &&
-                    id <= OGS_HOME_NETWORK_PKI_VALUE_MAX &&
-                    filename) {
-                    if (scheme == OGS_PROTECTION_SCHEME_PROFILE_A) {
-                        rv = ogs_pem_decode_curve25519_key(
-                                filename, self.hnet[id].key);
-                        if (rv == OGS_OK) {
-                            self.hnet[id].avail = true;
-                            self.hnet[id].scheme = scheme;
-                        } else {
-                            ogs_error(
-                                    "ogs_pem_decode_curve25519_key[%s] failed",
-                                    filename);
-                        }
-                    } else if (scheme == OGS_PROTECTION_SCHEME_PROFILE_B) {
-                        rv = ogs_pem_decode_secp256r1_key(
-                                filename, self.hnet[id].key);
-                        if (rv == OGS_OK) {
-                            self.hnet[id].avail = true;
-                            self.hnet[id].scheme = scheme;
-                        } else {
-                            ogs_error(
-                                    "ogs_pem_decode_secp256r1_key[%s] failed",
-                                    filename);
-                        }
-                    } else
-                        ogs_error("Invalid scheme [%d]", scheme);
-                } else
-                    ogs_error("Invalid home network configuration "
-                            "[id:%d, filename:%s]", id, filename);
-            } while (ogs_yaml_iter_type(&hnet_array) ==
-                    YAML_SEQUENCE_NODE);
         }
     }
 
@@ -788,6 +711,82 @@ int ogs_sbi_context_parse_config(
     return OGS_OK;
 }
 
+int ogs_sbi_context_parse_hnet_config(ogs_yaml_iter_t *root_iter)
+{
+    int rv;
+    ogs_yaml_iter_t hnet_array, hnet_iter;
+
+    ogs_assert(root_iter);
+    ogs_yaml_iter_recurse(root_iter, &hnet_array);
+    do {
+        uint8_t id = 0, scheme = 0;
+        const char *filename = NULL;
+
+        if (ogs_yaml_iter_type(&hnet_array) == YAML_MAPPING_NODE) {
+            memcpy(&hnet_iter, &hnet_array, sizeof(ogs_yaml_iter_t));
+        } else if (ogs_yaml_iter_type(&hnet_array) == YAML_SEQUENCE_NODE) {
+            if (!ogs_yaml_iter_next(&hnet_array))
+                break;
+            ogs_yaml_iter_recurse(&hnet_array, &hnet_iter);
+        } else if (ogs_yaml_iter_type(&hnet_array) == YAML_SCALAR_NODE) {
+            break;
+        } else
+            ogs_assert_if_reached();
+
+        while (ogs_yaml_iter_next(&hnet_iter)) {
+            const char *hnet_key = ogs_yaml_iter_key(&hnet_iter);
+            ogs_assert(hnet_key);
+            if (!strcmp(hnet_key, "id")) {
+                const char *v = ogs_yaml_iter_value(&hnet_iter);
+                if (v) {
+                    if (atoi(v) >= 1 && atoi(v) <= 254)
+                        id = atoi(v);
+                }
+            } else if (!strcmp(hnet_key, "scheme")) {
+                const char *v = ogs_yaml_iter_value(&hnet_iter);
+                if (v) {
+                    if (atoi(v) == 1 || atoi(v) == 2)
+                        scheme = atoi(v);
+                }
+            } else if (!strcmp(hnet_key, "key")) {
+                filename = ogs_yaml_iter_value(&hnet_iter);
+            } else
+                ogs_warn("unknown key `%s`", hnet_key);
+        }
+
+        if (id >= OGS_HOME_NETWORK_PKI_VALUE_MIN &&
+            id <= OGS_HOME_NETWORK_PKI_VALUE_MAX &&
+            filename) {
+            if (scheme == OGS_PROTECTION_SCHEME_PROFILE_A) {
+                rv = ogs_pem_decode_curve25519_key(
+                        filename, self.hnet[id].key);
+                if (rv == OGS_OK) {
+                    self.hnet[id].avail = true;
+                    self.hnet[id].scheme = scheme;
+                } else {
+                    ogs_error("ogs_pem_decode_curve25519_key"
+                            "[%s] failed", filename);
+                }
+            } else if (scheme == OGS_PROTECTION_SCHEME_PROFILE_B) {
+                rv = ogs_pem_decode_secp256r1_key(
+                        filename, self.hnet[id].key);
+                if (rv == OGS_OK) {
+                    self.hnet[id].avail = true;
+                    self.hnet[id].scheme = scheme;
+                } else {
+                    ogs_error("ogs_pem_decode_secp256r1_key[%s]"
+                            " failed", filename);
+                }
+            } else
+                ogs_error("Invalid scheme [%d]", scheme);
+        } else
+            ogs_error("Invalid home network configuration "
+                    "[id:%d, filename:%s]", id, filename);
+    } while (ogs_yaml_iter_type(&hnet_array) == YAML_SEQUENCE_NODE);
+
+    return OGS_OK;
+}
+
 bool ogs_sbi_nf_service_is_available(const char *name)
 {
     int i;
diff --git a/lib/sbi/context.h b/lib/sbi/context.h
index 60c9860d5..b6a8c4543 100644
--- a/lib/sbi/context.h
+++ b/lib/sbi/context.h
@@ -334,6 +334,7 @@ void ogs_sbi_context_final(void);
 ogs_sbi_context_t *ogs_sbi_self(void);
 int ogs_sbi_context_parse_config(
         const char *local, const char *nrf, const char *scp);
+int ogs_sbi_context_parse_hnet_config(ogs_yaml_iter_t *root_iter);
 
 bool ogs_sbi_nf_service_is_available(const char *name);
 
diff --git a/src/udm/context.c b/src/udm/context.c
index 7b9dcf62e..45535b45c 100644
--- a/src/udm/context.c
+++ b/src/udm/context.c
@@ -106,6 +106,9 @@ int udm_context_parse_config(void)
                     /* handle config in sbi library */
                 } else if (!strcmp(udm_key, "discovery")) {
                     /* handle config in sbi library */
+                } else if (!strcmp(udm_key, "hnet")) {
+                    rv = ogs_sbi_context_parse_hnet_config(&udm_iter);
+                    if (rv != OGS_OK) return rv;
                 } else
                     ogs_warn("unknown key `%s`", udm_key);
             }
diff --git a/tests/registration/abts-main.c b/tests/registration/abts-main.c
index 37435de57..7596b2f39 100644
--- a/tests/registration/abts-main.c
+++ b/tests/registration/abts-main.c
@@ -61,12 +61,48 @@ static void terminate(void)
     test_child_terminate();
     app_terminate();
 
-    ogs_sbi_context_final();
     test_5gc_final();
 
     ogs_app_terminate();
 }
 
+static int test_udm_context_parse_config(void)
+{
+    int rv;
+    yaml_document_t *document = NULL;
+    ogs_yaml_iter_t root_iter;
+
+    document = ogs_app()->document;
+    ogs_assert(document);
+
+    ogs_yaml_iter_init(&root_iter, document);
+    while (ogs_yaml_iter_next(&root_iter)) {
+        const char *root_key = ogs_yaml_iter_key(&root_iter);
+        ogs_assert(root_key);
+        if (!strcmp(root_key, "udm")) {
+            ogs_yaml_iter_t udm_iter;
+            ogs_yaml_iter_recurse(&root_iter, &udm_iter);
+            while (ogs_yaml_iter_next(&udm_iter)) {
+                const char *udm_key = ogs_yaml_iter_key(&udm_iter);
+                ogs_assert(udm_key);
+                if (!strcmp(udm_key, "sbi")) {
+                    /* handle config in sbi library */
+                } else if (!strcmp(udm_key, "service_name")) {
+                    /* handle config in sbi library */
+                } else if (!strcmp(udm_key, "discovery")) {
+                    /* handle config in sbi library */
+                } else if (!strcmp(udm_key, "hnet")) {
+                    rv = ogs_sbi_context_parse_hnet_config(&udm_iter);
+                    if (rv != OGS_OK) return rv;
+                } else
+                    ogs_warn("unknown key `%s`", udm_key);
+            }
+        }
+    }
+
+    return OGS_OK;
+}
+
 static void initialize(const char *const argv[])
 {
     int rv;
@@ -76,8 +112,7 @@ static void initialize(const char *const argv[])
 
     test_5gc_init();
 
-    ogs_sbi_context_init(OpenAPI_nf_type_AMF);
-    ogs_assert(ogs_sbi_context_parse_config(NULL, "nrf", "scp") == OGS_OK);
+    ogs_assert(OGS_OK == test_udm_context_parse_config());
 
     rv = app_initialize(argv);
     ogs_assert(rv == OGS_OK);