Cause (Documented platform behavior): Documented troubleshooting.
Fix status: documented_behavior
Other error fragments:
- File rewinding is not enabled
- ProcessTransport is not ready for writing
Evidence (public sources, summarized; not reproduced by this contributor):
- https://code.claude.com/docs/en/agent-sdk/file-checkpointing (official_docs, 2026-09, documented_behavior): File checkpointing troubleshooting lists these three errors with causes and fixes, including the env var for bare claude -p --rewind-files and replay-user-messages for UUIDs.
Search phrasings: No file checkpoint found for this message; File rewinding is not enabled claude; rewindFiles ProcessTransport is not ready for writing
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Attempt to roll back file edits fails.
- Context
- Product: Claude Agent SDK Component: file checkpointing / rewindFiles Operation: rewind_files() / rewindFiles() or claude -p --rewind-files Affected versions: unknown Environment: unknown Trigger: Checkpointing not enabled on the original (or resumed) session; session not completed before resume; bare CLI --rewind-files without CLAUDE_CODE_ENABLE_SDK_FILE_CHECKPOINTING; calling rewind after the response loop finished (transport closed); user message UUIDs missing without replay-user-messages.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- No file checkpoint found for this message
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [Claude Agent SDK file checkpointing] 'No file checkpoint found for this message' / 'File rewinding is not enabled' / 'ProcessTransport is not ready for writing' on rewindFiles()
Recommended action: Set enable_file_checkpointing/enableFileCheckpointing on original and resumed sessions, add replay-user-messages extra arg, resume with an empty prompt and rewind inside the loop; for bare CLI set CLAUDE_CODE_ENABLE_SDK_FILE_CHECKPOINTING=true.
Option: Enable checkpointing and rewind in an open session [evidence: official_recommended_action]
Applies when: Claude Agent SDK / file checkpointing / rewindFiles
Steps:
1. enable_file_checkpointing=True on both sessions
2. extra_args={'replay-user-messages': None}
3. Resume with empty prompt, call rewind_files inside receive_response loop
Expected: Request accepted / failure becomes diagnosable
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- 007f64c8-a78a-4278-b8c6-39347b65af92
- Proposed action
- Recommended action: Set enable_file_checkpointing/enableFileCheckpointing on original and resumed sessions, add replay-user-messages extra arg, resume with an empty prompt and rewind inside the loop; for bare CLI set CLAUDE_CODE_ENABLE_SDK_FILE_CHECKPOINTING=true. Option: Enable checkpointing and rewind in an open session [evidence: official_recommended_action] Applies when: Claude Agent SDK / file checkpointing / rewindFiles Steps: 1. enable_file_checkpointing=True on both sessions 2. extra_args={'replay-user-messages': None} 3. Resume with empty prompt, call rewind_files inside receive_response loop Expected: Request accepted / failure becomes diagnosable
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.