diff --git a/yarn-project/end-to-end/src/e2e_block_building.test.ts b/yarn-project/end-to-end/src/e2e_block_building.test.ts
index 20e8161f5945..1ba5a691dac5 100644
--- a/yarn-project/end-to-end/src/e2e_block_building.test.ts
+++ b/yarn-project/end-to-end/src/e2e_block_building.test.ts
@@ -210,7 +210,9 @@ describe('e2e_block_building', () => {
       it('private -> private', async () => {
         const nullifier = Fr.random();
         await contract.methods.emit_nullifier(nullifier).send().wait();
-        await expect(contract.methods.emit_nullifier(nullifier).send().wait()).rejects.toThrow('dropped');
+        await expect(contract.methods.emit_nullifier(nullifier).send().wait()).rejects.toThrow(
+          'The simulated transaction is unable to be added to state and is invalid.',
+        );
       });
 
       it('public -> public', async () => {
@@ -232,7 +234,9 @@ describe('e2e_block_building', () => {
       it('public -> private', async () => {
         const nullifier = Fr.random();
         await contract.methods.emit_nullifier_public(nullifier).send().wait();
-        await expect(contract.methods.emit_nullifier(nullifier).send().wait()).rejects.toThrow('dropped');
+        await expect(contract.methods.emit_nullifier(nullifier).send().wait()).rejects.toThrow(
+          'The simulated transaction is unable to be added to state and is invalid.',
+        );
       });
     });
   });
diff --git a/yarn-project/end-to-end/src/e2e_deploy_contract/legacy.test.ts b/yarn-project/end-to-end/src/e2e_deploy_contract/legacy.test.ts
index 3c085962cf80..b8a2b2fde7a7 100644
--- a/yarn-project/end-to-end/src/e2e_deploy_contract/legacy.test.ts
+++ b/yarn-project/end-to-end/src/e2e_deploy_contract/legacy.test.ts
@@ -81,7 +81,9 @@ describe('e2e_deploy_contract legacy', () => {
     const deployer = new ContractDeployer(TestContractArtifact, wallet);
 
     await deployer.deploy().send({ contractAddressSalt }).wait({ wallet });
-    await expect(deployer.deploy().send({ contractAddressSalt }).wait()).rejects.toThrow(/dropped/);
+    await expect(deployer.deploy().send({ contractAddressSalt }).wait()).rejects.toThrow(
+      /The simulated transaction is unable to be added to state and is invalid./,
+    );
   });
 
   it('should not deploy a contract which failed the public part of the execution', async () => {
diff --git a/yarn-project/end-to-end/src/e2e_deploy_contract/private_initialization.test.ts b/yarn-project/end-to-end/src/e2e_deploy_contract/private_initialization.test.ts
index ca7dff265c2d..8cb6d838b65a 100644
--- a/yarn-project/end-to-end/src/e2e_deploy_contract/private_initialization.test.ts
+++ b/yarn-project/end-to-end/src/e2e_deploy_contract/private_initialization.test.ts
@@ -93,7 +93,7 @@ describe('e2e_deploy_contract private initialization', () => {
         .constructor(...initArgs)
         .send()
         .wait(),
-    ).rejects.toThrow(/dropped/);
+    ).rejects.toThrow(/The simulated transaction is unable to be added to state and is invalid./);
   });
 
   it('refuses to call a private function that requires initialization', async () => {
diff --git a/yarn-project/end-to-end/src/e2e_max_block_number.test.ts b/yarn-project/end-to-end/src/e2e_max_block_number.test.ts
index 16758ffc7eaa..b6f706dd2edc 100644
--- a/yarn-project/end-to-end/src/e2e_max_block_number.test.ts
+++ b/yarn-project/end-to-end/src/e2e_max_block_number.test.ts
@@ -72,7 +72,7 @@ describe('e2e_max_block_number', () => {
       it('invalidates the transaction', async () => {
         await expect(
           contract.methods.set_tx_max_block_number(maxBlockNumber, enqueuePublicCall).send().wait(),
-        ).rejects.toThrow('dropped');
+        ).rejects.toThrow('The simulated transaction is unable to be added to state and is invalid.');
       });
     });
 
@@ -88,7 +88,7 @@ describe('e2e_max_block_number', () => {
       it('invalidates the transaction', async () => {
         await expect(
           contract.methods.set_tx_max_block_number(maxBlockNumber, enqueuePublicCall).send().wait(),
-        ).rejects.toThrow('dropped');
+        ).rejects.toThrow('The simulated transaction is unable to be added to state and is invalid.');
       });
     });
   });
diff --git a/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts b/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts
index 9345caef70f0..b48ea5ceae16 100644
--- a/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts
+++ b/yarn-project/end-to-end/src/e2e_private_voting_contract.test.ts
@@ -50,7 +50,7 @@ describe('e2e_voting_contract', () => {
       // We try voting again, but our TX is dropped due to trying to emit duplicate nullifiers as the voting contract
       // ignored our previous key rotation.
       await expect(votingContract.methods.cast_vote(candidate).send().wait()).rejects.toThrow(
-        'Reason: Tx dropped by P2P node.',
+        'The simulated transaction is unable to be added to state and is invalid.',
       );
     });
   });
diff --git a/yarn-project/end-to-end/src/e2e_prover/full.test.ts b/yarn-project/end-to-end/src/e2e_prover/full.test.ts
index f5881b11a1d9..ac47dd3a1ba0 100644
--- a/yarn-project/end-to-end/src/e2e_prover/full.test.ts
+++ b/yarn-project/end-to-end/src/e2e_prover/full.test.ts
@@ -106,7 +106,11 @@ describe('full_prover', () => {
       sentPublicTx.wait({ timeout: 10, interval: 0.1 }),
     ]);
 
-    expect(String((results[0] as PromiseRejectedResult).reason)).toMatch(/Tx dropped by P2P node/);
-    expect(String((results[1] as PromiseRejectedResult).reason)).toMatch(/Tx dropped by P2P node/);
+    expect(String((results[0] as PromiseRejectedResult).reason)).toMatch(
+      /Error: The simulated transaction is unable to be added to state and is invalid./,
+    );
+    expect(String((results[1] as PromiseRejectedResult).reason)).toMatch(
+      /Error: The simulated transaction is unable to be added to state and is invalid./,
+    );
   });
 });
diff --git a/yarn-project/end-to-end/src/fixtures/fixtures.ts b/yarn-project/end-to-end/src/fixtures/fixtures.ts
index 1aa0c265a038..986bc4e417cb 100644
--- a/yarn-project/end-to-end/src/fixtures/fixtures.ts
+++ b/yarn-project/end-to-end/src/fixtures/fixtures.ts
@@ -7,7 +7,8 @@ export const U128_UNDERFLOW_ERROR = "Assertion failed: attempt to subtract with
 export const U128_OVERFLOW_ERROR = "Assertion failed: attempt to add with overflow 'hi == high'";
 export const BITSIZE_TOO_BIG_ERROR = "Assertion failed. 'self.__assert_max_bit_size'";
 // TODO(https://github.com/AztecProtocol/aztec-packages/issues/5818): Make these a fixed error after transition.
-export const DUPLICATE_NULLIFIER_ERROR = /dropped|duplicate nullifier|reverted/;
+export const DUPLICATE_NULLIFIER_ERROR =
+  /dropped|duplicate nullifier|reverted|The simulated transaction is unable to be added to state and is invalid./;
 export const NO_L1_TO_L2_MSG_ERROR =
   /No non-nullified L1 to L2 message found for message hash|Tried to consume nonexistent L1-to-L2 message/;
 export const STATIC_CALL_STATE_MODIFICATION_ERROR =
diff --git a/yarn-project/end-to-end/src/guides/dapp_testing.test.ts b/yarn-project/end-to-end/src/guides/dapp_testing.test.ts
index bc5a5da03903..42c383196ce7 100644
--- a/yarn-project/end-to-end/src/guides/dapp_testing.test.ts
+++ b/yarn-project/end-to-end/src/guides/dapp_testing.test.ts
@@ -214,7 +214,9 @@ describe('guides/dapp/testing', () => {
         await call2.prove();
 
         await call1.send().wait();
-        await expect(call2.send().wait()).rejects.toThrow(/dropped/);
+        await expect(call2.send().wait()).rejects.toThrow(
+          /The simulated transaction is unable to be added to state and is invalid./,
+        );
         // docs:end:tx-dropped
       });
 
diff --git a/yarn-project/pxe/src/pxe_service/pxe_service.ts b/yarn-project/pxe/src/pxe_service/pxe_service.ts
index e099f5cc0681..87f2010e19a4 100644
--- a/yarn-project/pxe/src/pxe_service/pxe_service.ts
+++ b/yarn-project/pxe/src/pxe_service/pxe_service.ts
@@ -564,9 +564,7 @@ export class PXEService implements PXE {
       throw new Error(`A settled tx with equal hash ${txHash.toString()} exists.`);
     }
 
-    const isValidTx = await this.node.validateTx(tx);
-
-    if (!isValidTx) {
+    if (!(await this.node.isValidTx(tx))) {
       throw new Error('The simulated transaction is unable to be added to state and is invalid.');
     }