# Error Codes & Troubleshooting

The Explorer app also provides error codes and explanations for unsuccessful bundles. 

Common error codes include:

* **R0008**: Searcher has already bid in this auction.

* **R0009**: Could not find searcher EOA.

* **R0010**: Auction has expired.

* **R0014**: Bundle has too few transactions.

* **R0015**: Bundle has too many transactions.

* **R0017**: Time from opportunity transaction arrival to auction start exceeds grace period.

* **R0021**: Opportunity transaction hash does not match hash in searcher transaction.

* **R0022**: Searcher sending bid to wrong Auction Handler contract address.

* **R0023**: Validator not currently connected to PFL node.

* **R0025**: Could not decode PFL transaction.

* **R0026**: Could not compile bundle.

* **R0028**: Validator already knows opportunity transaction.

* **R0099**: Node hosting the auction is shutting down for updates.

* **R0100**: Auction has already completed successfully.

* **N/A**: Indicates no errors for successful bids or no unique error code found for unsuccessful bids.