diff --git a/cardano-cli/src/Cardano/CLI/EraBased/Run/Transaction.hs b/cardano-cli/src/Cardano/CLI/EraBased/Run/Transaction.hs
index c59ace374..e4b1018e7 100644
--- a/cardano-cli/src/Cardano/CLI/EraBased/Run/Transaction.hs
+++ b/cardano-cli/src/Cardano/CLI/EraBased/Run/Transaction.hs
@@ -1313,7 +1313,7 @@ toTxAlonzoDatum supp cliDatum =
       pure (TxOutDatumHash supp $ hashScriptDataBytes sData)
     TxOutDatumByValue sDataOrFile -> do
       sData <- firstExceptT TxCmdScriptDataError $ readScriptDataOrFile sDataOrFile
-      pure (TxOutDatumInTx supp sData)
+      pure (TxOutSupplementalDatum supp sData)
     TxOutInlineDatumByValue sDataOrFile -> do
       let cEra = toCardanoEra supp
       forEraInEon cEra (txFeatureMismatch cEra TxFeatureInlineDatums) $ \babbageOnwards -> do
diff --git a/cardano-cli/src/Cardano/CLI/Json/Friendly.hs b/cardano-cli/src/Cardano/CLI/Json/Friendly.hs
index 8549ae2a2..8c95c4bf3 100644
--- a/cardano-cli/src/Cardano/CLI/Json/Friendly.hs
+++ b/cardano-cli/src/Cardano/CLI/Json/Friendly.hs
@@ -212,7 +212,6 @@ friendlyTxBodyImpl
             txValidityUpperBound
             txMetadata
             txAuxScripts
-            txSupplementalData
             txExtraKeyWits
             _txProtocolParams
             txWithdrawals
@@ -252,10 +251,6 @@ friendlyTxBodyImpl
                     era
                     (`getRedeemerDetails` tb)
                  )
-              ++ ( monoidForEraInEon @AlonzoEraOnwards
-                    era
-                    (`friendlySupplementalDatums` txSupplementalData)
-                 )
               ++ ( monoidForEraInEon @ConwayEraOnwards
                     era
                     ( \cOnwards ->
@@ -293,16 +288,6 @@ friendlyTxBodyImpl
     friendlyLedgerProposals cOnwards proposalProcedures =
       Array $ fromList $ map (friendlyLedgerProposal cOnwards) proposalProcedures
 
--- | API doesn't yet show that supplemental datums are alonzo onwards. So we do it in this function prototype,
--- even if we don't use the witness.
-friendlySupplementalDatums
-  :: AlonzoEraOnwards era -> BuildTxWith build (TxSupplementalDatums era) -> [Aeson.Pair]
-friendlySupplementalDatums _era = \case
-  ViewTx -> []
-  BuildTxWith TxSupplementalDataNone -> []
-  BuildTxWith (TxSupplementalDatums hashableScriptDatas) ->
-    ["supplemental datums" .= toJSON hashableScriptDatas]
-
 friendlyLedgerProposal
   :: ConwayEraOnwards era -> L.ProposalProcedure (ShelleyLedgerEra era) -> Aeson.Value
 friendlyLedgerProposal cOnwards proposalProcedure = object $ friendlyProposalImpl cOnwards (Proposal proposalProcedure)
@@ -483,7 +468,7 @@ friendlyTxOut era (TxOut addr amount mdatum script) =
   renderDatum = \case
     TxOutDatumNone -> Nothing
     TxOutDatumHash _ h -> Just $ toJSON h
-    TxOutDatumInTx _ sData -> Just $ scriptDataToJson ScriptDataJsonDetailedSchema sData
+    TxOutSupplementalDatum _ sData -> Just $ scriptDataToJson ScriptDataJsonDetailedSchema sData
     TxOutDatumInline _ sData -> Just $ scriptDataToJson ScriptDataJsonDetailedSchema sData
 
 friendlyStakeReference :: StakeAddressReference -> Aeson.Value