diff --git a/tests/data/state_estimation/link/asym_output.json b/tests/data/state_estimation/link/asym_output.json
new file mode 100644
index 0000000000..f1ef399339
--- /dev/null
+++ b/tests/data/state_estimation/link/asym_output.json
@@ -0,0 +1,254 @@
+{
+  "version": "1.0",
+  "type": "asym_output",
+  "is_batch": false,
+  "attributes": {},
+  "data": {
+    "node": [
+      {
+        "id": 30,
+        "energized": 1,
+        "u_pu": [
+          1.0000000100640516,
+          1.0000000100640518,
+          1.0000000100640518
+        ],
+        "u": [
+          230.94011000004346,
+          230.94011000004352,
+          230.94011000004352
+        ],
+        "u_angle": [
+          -3.607050966088345e-05,
+          -2.0944311729028566,
+          2.094359031883535
+        ],
+        "p": [
+          0.0,
+          -0.0012418410248675865,
+          0.009268427792436354
+        ],
+        "q": [
+          -0.0,
+          -0.0021507525858327006,
+          -0.006119996943348736
+        ]
+      },
+      {
+        "id": 90,
+        "energized": 1,
+        "u_pu": [
+          1.0000101195612183,
+          1.0000101195612185,
+          1.0000101195612183
+        ],
+        "u": [
+          5773.561117210193,
+          5773.5611172101935,
+          5773.561117210193
+        ],
+        "u_angle": [
+          -6.776195005914213e-21,
+          -2.0943951023931957,
+          2.0943951023931957
+        ],
+        "p": [
+          393.3408030101657,
+          393.3408030098129,
+          393.3408030088496
+        ],
+        "q": [
+          0.007654988835790601,
+          0.007654989582357776,
+          0.00765498827708678
+        ]
+      },
+      {
+        "id": 112,
+        "energized": 1,
+        "u_pu": [
+          1.0000000100640516,
+          1.000000010064052,
+          1.0000000100640516
+        ],
+        "u": [
+          230.94011000004346,
+          230.94011000004355,
+          230.94011000004346
+        ],
+        "u_angle": [
+          -3.6070509660883455e-05,
+          -2.0944311729028566,
+          2.094359031883535
+        ],
+        "p": [
+          0.0010466757970555023,
+          0.006889802345860008,
+          -0.004495174863230333
+        ],
+        "q": [
+          -0.0005375343256626614,
+          -0.0006991445095695525,
+          -0.0005247856136144402
+        ]
+      }
+    ],
+    "source": [
+      {
+        "id": 207,
+        "energized": 1,
+        "p": [
+          393.3408030101657,
+          393.3408030098129,
+          393.3408030088496
+        ],
+        "q": [
+          0.007654988835790601,
+          0.007654989582357776,
+          0.00765498827708678
+        ],
+        "i": [
+          0.06812793613843621,
+          0.06812793613837509,
+          0.06812793613820825
+        ],
+        "s": [
+          393.34080308465434,
+          393.34080308430157,
+          393.3408030833383
+        ],
+        "pf": [
+          0.9999999998106257,
+          0.9999999998106256,
+          0.9999999998106256
+        ]
+      }
+    ],
+    "transformer": [
+      {
+        "id": 208,
+        "energized": 1,
+        "loading": 0.0018730514432576098,
+        "p_from": [
+          393.3408030101657,
+          393.3408030098129,
+          393.3408030088496
+        ],
+        "q_from": [
+          0.007654988835790601,
+          0.007654989582357776,
+          0.00765498827708678
+        ],
+        "i_from": [
+          0.06812793613843621,
+          0.06812793613837509,
+          0.06812793613820826
+        ],
+        "s_from": [
+          393.34080308465434,
+          393.34080308430157,
+          393.3408030833383
+        ],
+        "p_to": [
+          -0.0014972687986235403,
+          -0.0014972693598851046,
+          -0.0014972685747695362
+        ],
+        "q_to": [
+          -0.0005609905429188497,
+          -0.0005609913192535611,
+          -0.0005609908303419999
+        ],
+        "i_to": [
+          6.9234982935624505e-06,
+          6.923501748849574e-06,
+          6.923497822536436e-06
+        ],
+        "s_to": [
+          0.0015989134575004255,
+          0.0015989142554648143,
+          0.0015989133487216264
+        ]
+      }
+    ],
+    "link": [
+      {
+        "id": 229,
+        "energized": 1,
+        "loading": 0.0,
+        "p_from": [
+          0.0,
+          -0.0012418410248675865,
+          0.009268427792436354
+        ],
+        "q_from": [
+          -0.0,
+          -0.0021507525858327006,
+          -0.006119996943348736
+        ],
+        "i_from": [
+          0.0,
+          1.0753986783132437e-05,
+          4.8093290952436835e-05
+        ],
+        "s_from": [
+          0.0,
+          0.002483526890635619,
+          0.011106669902819858
+        ],
+        "p_to": [
+          0.0,
+          0.001241841024867587,
+          -0.009268427792436354
+        ],
+        "q_to": [
+          -0.0,
+          0.0021507525858327006,
+          0.006119996943348735
+        ],
+        "i_to": [
+          0.0,
+          1.0753986783132437e-05,
+          4.8093290952436835e-05
+        ],
+        "s_to": [
+          0.0,
+          0.0024835268906356193,
+          0.011106669902819858
+        ]
+      }
+    ],
+    "asym_voltage_sensor": [
+      {
+        "id": 329,
+        "energized": 1,
+        "u_residual": [
+          -4.3433317209783434e-11,
+          -4.348459621475366e-11,
+          -4.348459621475366e-11
+        ],
+        "u_angle_residual": [
+          null,
+          null,
+          null
+        ]
+      }
+    ],
+    "asym_power_sensor": [
+      {
+        "id": 466,
+        "energized": 1,
+        "p_residual": [
+          0.0014972687986235403,
+          0.0014972693598851046,
+          0.0014972685747695362
+        ],
+        "q_residual": [
+          0.0005609905429188497,
+          0.0005609913192535611,
+          0.0005609908303419999
+        ]
+      }
+    ]
+  }
+}
diff --git a/tests/data/state_estimation/link/asym_output.json.license b/tests/data/state_estimation/link/asym_output.json.license
new file mode 100644
index 0000000000..7601059167
--- /dev/null
+++ b/tests/data/state_estimation/link/asym_output.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: Contributors to the Power Grid Model project <powergridmodel@lfenergy.org>
+
+SPDX-License-Identifier: MPL-2.0
diff --git a/tests/data/state_estimation/link/input.json b/tests/data/state_estimation/link/input.json
new file mode 100644
index 0000000000..e1d79c5b5c
--- /dev/null
+++ b/tests/data/state_estimation/link/input.json
@@ -0,0 +1,29 @@
+{
+  "version": "1.0",
+  "type": "input",
+  "is_batch": false,
+  "attributes": {},
+  "data": {
+    "node": [
+      {"id": 30, "u_rated": 400},
+      {"id": 90, "u_rated": 10000},
+      {"id": 112, "u_rated": 400}
+    ],
+    "source": [
+      {"id": 207, "node": 90, "status": 1, "u_ref": 1, "u_ref_angle": 0}
+    ],
+    "transformer": [
+      {"id": 208, "from_node": 90, "to_node": 112, "from_status": 1, "to_status": 1, "u1": 10000, "u2": 400, "sn": 630000, "uk": 0.040000000000000001, "pk": 6800.2200000000003, "i0": 0.0018730158730158729, "p0": 1180, "winding_from": 1, "winding_to": 1, "clock": 0, "tap_side": 1, "tap_pos": 5, "tap_min": 1, "tap_max": 9, "tap_nom": 5, "tap_size": 10, "r_grounding_from": 0, "x_grounding_from": 0, "r_grounding_to": 0, "x_grounding_to": 0}
+    ],
+    "link": [
+      {"id": 229, "from_node": 30, "to_node": 112, "from_status": 1, "to_status": 1}
+    ],
+    "asym_voltage_sensor": [
+      {"id": 329, "measured_object": 30, "u_sigma": 2.3094000000000001, "u_measured": [230.94011, 230.94011, 230.94011]}
+
+    ],
+    "asym_power_sensor": [
+       {"id": 466, "measured_object": 208, "measured_terminal_type": 1, "p_measured": [0, 0, 0], "q_measured": [0, 0, 0], "p_sigma": [1000, 1000, 1000], "q_sigma": [1000, 1000, 1000]}
+    ]
+  }
+}
\ No newline at end of file
diff --git a/tests/data/state_estimation/link/input.json.license b/tests/data/state_estimation/link/input.json.license
new file mode 100644
index 0000000000..7601059167
--- /dev/null
+++ b/tests/data/state_estimation/link/input.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: Contributors to the Power Grid Model project <powergridmodel@lfenergy.org>
+
+SPDX-License-Identifier: MPL-2.0
diff --git a/tests/data/state_estimation/link/params.json b/tests/data/state_estimation/link/params.json
new file mode 100644
index 0000000000..11b506051b
--- /dev/null
+++ b/tests/data/state_estimation/link/params.json
@@ -0,0 +1,12 @@
+{
+  "calculation_method": ["iterative_linear", "newton_raphson"],
+  "rtol": 1e-3,
+  "atol": {
+    "default": 1e-5,
+    ".+_residual": 0.15
+  },
+  "xfail": {
+    "raises": "SparseMatrixError",
+    "reason": "Bug in https://github.com/PowerGridModel/power-grid-model/issues/1567"
+  }
+}
diff --git a/tests/data/state_estimation/link/params.json.license b/tests/data/state_estimation/link/params.json.license
new file mode 100644
index 0000000000..7601059167
--- /dev/null
+++ b/tests/data/state_estimation/link/params.json.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: Contributors to the Power Grid Model project <powergridmodel@lfenergy.org>
+
+SPDX-License-Identifier: MPL-2.0