diff --git a/NumericalData/GOES/17/Ephemeris/PT1M.xml b/NumericalData/GOES/17/Ephemeris/PT1M.xml
index 11d5eef..7d7dfca 100644
--- a/NumericalData/GOES/17/Ephemeris/PT1M.xml
+++ b/NumericalData/GOES/17/Ephemeris/PT1M.xml
@@ -6,6 +6,12 @@
     <ResourceHeader>
       <ResourceName>GOES 17 Ephemeris, Orbital Positions generated via Satellite Situation Center, SSC, Services, 1 min Data</ResourceName>
       <ReleaseDate>2021-04-27T17:52:57Z</ReleaseDate>
+      <RevisionHistory>
+        <RevisionEvent>
+          <ReleaseDate>2024-04-04T12:34:56.789</ReleaseDate>
+          <Note>Removed spase://SMWG/Instrument/GOES/17/MAG as parent InstrumentID as it creates confusion in product/instrument/observatory hierarchy displays</Note>
+        </RevisionEvent>
+      </RevisionHistory>
       <Description>GOES17 Ephemeris Data generated via Services provided by the Satellite Situation Center, SSC, which is an Operational Unit of the Space Physics Data Facility, SPDF.</Description>
       <Acknowledgement>Please acknowledge R. M. Candey, the NASA GSFC Satellite Situation Center, SSC, and the National Oceanic and Atmospheric Administration.</Acknowledgement>
       <Contact>
@@ -63,7 +69,6 @@
     </AccessInformation>
     <ProcessingLevel>Calibrated</ProcessingLevel>
     <InstrumentID>spase://SMWG/Instrument/GOES/17/Ephemeris</InstrumentID>
-    <InstrumentID>spase://SMWG/Instrument/GOES/17/MAG</InstrumentID>
     <MeasurementType>Ephemeris</MeasurementType>
     <MeasurementType>MagneticField</MeasurementType>
     <TemporalDescription>