diff --git a/src/test/app/PermissionedDomains_test.cpp b/src/test/app/PermissionedDomains_test.cpp
index 7955aa7fe02..52c9e02aa03 100644
--- a/src/test/app/PermissionedDomains_test.cpp
+++ b/src/test/app/PermissionedDomains_test.cpp
@@ -26,7 +26,6 @@
 #include <xrpl/protocol/Issue.h>
 #include <xrpl/protocol/jss.h>
 
-#include <algorithm>
 #include <exception>
 #include <map>
 #include <optional>
@@ -144,6 +143,11 @@ class PermissionedDomains_test : public beast::unit_test::suite
             {alice7, "credential7"}};
         env(pd::setTx(account, credentialsNon, domain), ter(tecNO_ISSUER));
 
+        // Test bad fee
+        env(pd::setTx(account, credentials11, domain),
+            fee(1, true),
+            ter(temBAD_FEE));
+
         pd::Credentials const credentials4{
             {alice2, "credential1"},
             {alice3, "credential2"},
@@ -401,6 +405,9 @@ class PermissionedDomains_test : public beast::unit_test::suite
         // Delete a non-existent domain.
         env(pd::deleteTx(alice, uint256(75)), ter(tecNO_ENTRY));
 
+        // Test bad fee
+        env(pd::deleteTx(alice, uint256(75)), ter(temBAD_FEE), fee(1, true));
+
         // Delete a zero domain.
         env(pd::deleteTx(alice, uint256(0)), ter(temMALFORMED));
 
diff --git a/src/test/jtx/fee.h b/src/test/jtx/fee.h
index c671e0b2a1e..ab7a743a3d0 100644
--- a/src/test/jtx/fee.h
+++ b/src/test/jtx/fee.h
@@ -53,7 +53,7 @@ class fee
             Throw<std::runtime_error>("fee: not XRP");
     }
 
-    explicit fee(std::uint64_t amount) : fee{STAmount{amount}}
+    explicit fee(std::uint64_t amount, bool negative = false) : fee{STAmount{amount, negative}}
     {
     }
 
diff --git a/src/test/rpc/LedgerRPC_test.cpp b/src/test/rpc/LedgerRPC_test.cpp
index 76e9feeb83b..99b0f0a23fc 100644
--- a/src/test/rpc/LedgerRPC_test.cpp
+++ b/src/test/rpc/LedgerRPC_test.cpp
@@ -3113,6 +3113,26 @@ class LedgerRPC_test : public beast::unit_test::suite
                     jss::PermissionedDomain);
         }
 
+        {
+            // Fail, invalid permissioned domain index
+            Json::Value params;
+            params[jss::ledger_index] = jss::validated;
+            params[jss::permissioned_domain] =
+                "12F1F1F1F180D67377B2FAB292A31C922470326268D2B9B74CD1E582645B9A"
+                "DE";
+            auto const jrr = env.rpc("json", "ledger_entry", to_string(params));
+            checkErrorValue(jrr[jss::result], "entryNotFound", "");
+        }
+
+        {
+            // Fail, invalid permissioned domain index
+            Json::Value params;
+            params[jss::ledger_index] = jss::validated;
+            params[jss::permissioned_domain] = "NotAHexString";
+            auto const jrr = env.rpc("json", "ledger_entry", to_string(params));
+            checkErrorValue(jrr[jss::result], "malformedRequest", "");
+        }
+
         {
             // Fail, invalid account
             Json::Value params;