ClearCache

Core CSMS->CS OCPP 2.0.1

Sent by the CSMS to clear the Charging Station's authorization cache.

Quick Reference

This message has an empty payload: {}

Example Payload

{}

Example Full Frame

[
  2,
  "msg-001",
  "ClearCache",
  {}
]

Format: [MessageType, MessageId, Action, Payload]

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Overview

ClearCache instructs the Charging Station to clear its local authorization cache. This forces subsequent authorization requests to go directly to the CSMS instead of using cached results.

When to Send

After revoking an RFID card that may be cached
When troubleshooting authorization issues
After a local authorization list update to ensure consistency

Expected Response

status: Accepted or Rejected

Usage Notes

ClearCache only affects the authorization cache, not the local authorization list
Use SendLocalList to manage the local authorization list separately
After clearing, the next authorization for each token will require a round-trip to the CSMS

Testing Tips

Authorize a token, clear the cache, then verify the next authorization goes to the CSMS
Test that previously cached Accepted tokens are re-validated after cache clear

Common Errors

`RpcFrameworkError`

Cause: Non-empty payload sent

Solution: ClearCache request payload must be an empty object {}