diff --git a/doc/lsst.ap.verify/index.rst b/doc/lsst.ap.verify/index.rst
index d0a25397..e82d669b 100644
--- a/doc/lsst.ap.verify/index.rst
+++ b/doc/lsst.ap.verify/index.rst
@@ -25,6 +25,7 @@ Using lsst.ap.verify
    datasets
    new-metrics
    command-line-reference
+   limitations
 
 .. _lsst.ap.verify-contributing:
 
diff --git a/doc/lsst.ap.verify/limitations.rst b/doc/lsst.ap.verify/limitations.rst
new file mode 100644
index 00000000..ff8c7411
--- /dev/null
+++ b/doc/lsst.ap.verify/limitations.rst
@@ -0,0 +1,14 @@
+.. py:currentmodule:: lsst.ap.verify
+
+.. _ap-verify-request:
+
+#################
+Known Limitations 
+#################
+
+mpSkyEphemerisQueryTask
+=======================
+
+The AP pipelines now run :py:class:`lsst.ap.association.MPSkyEphemerisQueryTask`, which includes a request to mpSky.
+mpSky is not expected to host ephemerides for all test datasets, (or be reachable from Jenkins) so it will often (or always) fail.
+When requests fail, mpSkyEphemerisQuery will return nothing, and diaPipe will skip ssoAssociation.
diff --git a/python/lsst/ap/verify/testPipeline.py b/python/lsst/ap/verify/testPipeline.py
index d0d59d33..529b5a51 100644
--- a/python/lsst/ap/verify/testPipeline.py
+++ b/python/lsst/ap/verify/testPipeline.py
@@ -35,7 +35,8 @@
 import lsst.afw.math as afwMath
 import lsst.afw.table as afwTable
 from lsst.ap.association import (LoadDiaCatalogsConfig, TransformDiaSourceCatalogConfig,
-                                 DiaPipelineConfig, FilterDiaSourceCatalogConfig)
+                                 DiaPipelineConfig, FilterDiaSourceCatalogConfig,
+                                 MPSkyEphemerisQueryConfig)
 from lsst.pipe.base import PipelineTask, Struct
 from lsst.ip.isr import IsrTaskConfig
 from lsst.ip.diffim import (GetTemplateConfig, AlardLuptonSubtractConfig,
@@ -552,6 +553,16 @@ def run(self, template, science, difference, diaSources, pretrainedModel=None):
         return Struct(classifications=afwTable.BaseCatalog(afwTable.Schema()))
 
 
+class MockMPSkyEphemerisQueryTask(PipelineTask):
+    """A do-nothing substitute for MPSkyEphemerisQueryTask.
+    """
+    _DefaultName = "notMPSkyEphemerisQuery"
+    ConfigClass = MPSkyEphemerisQueryConfig
+
+    def run(self, predictedRegionTime):
+        return Struct(ssObjects=pandas.DataFrame())
+
+
 class MockTransformDiaSourceCatalogTask(PipelineTask):
     """A do-nothing substitute for TransformDiaSourceCatalogTask.
     """
diff --git a/tests/test_testPipeline.py b/tests/test_testPipeline.py
index 133d9911..dbcd7def 100644
--- a/tests/test_testPipeline.py
+++ b/tests/test_testPipeline.py
@@ -42,7 +42,8 @@
     MockCalibrateTask, MockGetTemplateTask, \
     MockAlardLuptonSubtractTask, MockDetectAndMeasureTask, MockTransformDiaSourceCatalogTask, \
     MockRBTransiNetTask, MockDiaPipelineTask, MockFilterDiaSourceCatalogTask, \
-    MockSpatiallySampledMetricsTask, MockLoadDiaCatalogsTask
+    MockSpatiallySampledMetricsTask, MockMPSkyEphemerisQueryTask, MockLoadDiaCatalogsTask
+from lsst.sphgeom import Circle
 
 
 class MockTaskTestSuite(unittest.TestCase):
@@ -56,7 +57,6 @@ class MockTaskTestSuite(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
-
         repoDir = tempfile.mkdtemp()
         cls.addClassCleanup(shutil.rmtree, repoDir, ignore_errors=True)
         cls.repo = butlerTests.makeTestRepo(repoDir)
@@ -77,6 +77,7 @@ def setUpClass(cls):
             name=INSTRUMENT, visit_max=256, exposure_max=256, detector_max=128,
             class_name="lsst.obs.base.instrument_tests.DummyCam",
         )
+
         cls.repo.registry.syncDimensionData("instrument", instrumentRecord)
         butlerTests.addDataIdValue(cls.repo, "physical_filter", PHYSICAL, band=BAND)
         butlerTests.addDataIdValue(cls.repo, "subfilter", SUB_FILTER)
@@ -141,6 +142,8 @@ def setUpClass(cls):
         butlerTests.addDatasetType(cls.repo, "deepDiff_candidateDiaSrc", cls.visitId.dimensions,
                                    "SourceCatalog")
         butlerTests.addDatasetType(cls.repo, "visitSsObjects", cls.visitOnlyId.dimensions, "DataFrame")
+        butlerTests.addDatasetType(cls.repo, "preloaded_SsObjects", cls.groupId.dimensions, "DataFrame")
+        butlerTests.addDatasetType(cls.repo, "regionTimeInfo", cls.groupId.dimensions, "RegionTimeInfo")
         butlerTests.addDatasetType(cls.repo, "apdb_marker", cls.visitId.dimensions, "Config")
         butlerTests.addDatasetType(cls.repo, "deepDiff_assocDiaSrc", cls.visitId.dimensions, "DataFrame")
         butlerTests.addDatasetType(cls.repo, "deepDiff_longTrailedSrc", cls.visitId.dimensions,
@@ -356,6 +359,21 @@ def testMockRBTransiNetTask(self):
              })
         pipelineTests.runTestQuantum(task, self.butler, quantum, mockRun=False)
 
+    def testMockMPSkyEphemerisQueryTask(self):
+        task = MockMPSkyEphemerisQueryTask()
+        pipelineTests.assertValidInitOutput(task)
+        dummyRegionTimeInfo = RegionTimeInfo(timespan=Timespan.makeEmpty(), region=Circle())
+        result = task.run(predictedRegionTime=dummyRegionTimeInfo)
+        pipelineTests.assertValidOutput(task, result)
+
+        self.butler.put(dummyRegionTimeInfo, "regionTimeInfo", self.groupId)
+        quantum = pipelineTests.makeQuantum(
+            task, self.butler, self.groupId,
+            {"predictedRegionTime": self.groupId,
+             "ssObjects": self.groupId,
+             })
+        pipelineTests.runTestQuantum(task, self.butler, quantum, mockRun=False)
+
     def testMockTransformDiaSourceCatalogTask(self):
         task = MockTransformDiaSourceCatalogTask(initInputs=afwTable.SourceCatalog())
         pipelineTests.assertValidInitOutput(task)
@@ -388,14 +406,14 @@ def testMockDiaPipelineTask(self):
         self.butler.put(pandas.DataFrame(), "preloaded_diaSources", self.groupId)
         self.butler.put(pandas.DataFrame(), "preloaded_diaForcedSources", self.groupId)
         self.butler.put(pandas.DataFrame(), "deepDiff_diaSrcTable", self.visitId)
-        self.butler.put(pandas.DataFrame(), "visitSsObjects", self.visitId)
+        self.butler.put(pandas.DataFrame(), "preloaded_SsObjects", self.groupId)
         self.butler.put(afwImage.ExposureF(), "deepDiff_differenceExp", self.visitId)
         self.butler.put(afwImage.ExposureF(), "calexp", self.visitId)
         self.butler.put(afwImage.ExposureF(), "deepDiff_templateExp", self.visitId)
         quantum = pipelineTests.makeQuantum(
             task, self.butler, self.visitId,
             {"diaSourceTable": self.visitId,
-             "solarSystemObjectTable": self.visitId,
+             "solarSystemObjectTable": self.visitOnlyId,
              "diffIm": self.visitId,
              "exposure": self.visitId,
              "template": self.visitId,