Seedance API Errors: Find the Cause Before You Retry

Seedance error quick reference

The code names the stage and media type; the message and suffix narrow the cause. A generic app notice such as "generation failed" is not enough to identify it. Read the underlying API response or ask your provider for the original error.

Error or message	What to inspect	Next useful action
InputTextSensitiveContentDetected	Actual text sent to the model	Inspect the full transmitted prompt
InputImageSensitiveContentDetected	Flagged image entry	Identify the rejected reference
Image .PrivacyInformation / "may contain real person"	Portrait eligibility and review status	Check the supported authorized-asset workflow
OutputVideoSensitiveContentDetected	Failed task's output error	Check status and refund receipt
.PolicyViolation / "may be related to copyright restrictions"	Input/output and image/video/audio	Follow the copyright-specific diagnosis
InvalidParameter / resource download failed	Schema, dimensions, duration, reachable media URL	Check the selected model's request requirements
Timeout, 5xx or empty response after submission	Whether the original generation was accepted	Recover its submission receipt before another POST

Why Seedance says generation failed even after HTTP 200

Submission, task processing and financial settlement are separate. An HTTP success can mean the request was accepted for processing, or that a task query worked; it does not mean the video passed review. A query can return HTTP 200 while the body says status: "failed". Compatibility responses can place that state under data.status.

Save the public task ID and read its error. Download only after confirmed completion with a result URL. Polling a failed task does not restart it, and stopping polling does not cancel it. Do not diagnose a completed-generation issue from the original submission HTTP status alone.

What does content[n] mean in a Seedance error?

It identifies an entry in the content array seen by the upstream service. That array can mix text, images and videos. Your application or gateway may assemble it from several request fields; content[3] is not universally the fourth uploaded image.

Keep a private map of each sent entry's type and source. If an error names several positions, inspect every named entry. Share a redacted mapping with support, rather than publicly posting the original media, signed URLs or your API key.

Retry a failed task or recover an uncertain submission?

If you have a confirmed failed task, read the exact cause and correct the affected input before deciding to create a new generation. Keep its billing receipt; a replacement is a separate task. Repeated identical moderation failures warrant review, not a loop of blind submissions.

If the original submission timed out, its acceptance may be unknown. For supported APIMaster requests originally sent with an Idempotency-Key, query the saved receipt using the same account and key:

curl 'https://apimaster.ai/v1/video-submissions/by-key' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Idempotency-Key: YOUR_ORIGINAL_IDEMPOTENCY_KEY'

An acceptance_unknown result is not permission to create a replacement. Query the original task only when task_ready=true. For confirmed nonacceptance, check the documented recovery gates; automated replacement also requires final billing evidence. A lookup 404 or an empty usage page does not establish nonacceptance. See submission recovery.

Does a failed Seedance generation cost money?

For APIMaster's documented per-second Seedance workflow, confirmed provider-task failures trigger a full generation refund. A temporary query error does not immediately cancel or refund a running task. Inspect billing.settlement_status, refunded_amount and net_amount, rather than judging only the initial debit row. Other platforms can have different rules, and independent asset-service fees are a separate question.

New tasks have a billing receipt; historical tasks may not. A receipt 404 does not mean zero cost. If financial status remains pending, keep the original task identity and ask support to reconcile it.

Use Seedance with visible pricing and task receipts

Check Seedance 2.5 pricing, or compare Fast and Mini for a different budget. Then register, create an API key, and use https://apimaster.ai/v1 with the exact model ID, such as seedance-2.5. Read the generation API guide before submitting a paid request.

For a supported request, obtain a non-binding quote before generation and keep the resulting task ID for status and settlement checks. Switching platforms or paying less does not guarantee moderation approval.

Sources and scope

Error meanings were checked against the official ModelArk error catalog on 2026-11-11 and redacted operational error messages. Positions are normalized to content[n]; request IDs and private media are omitted. Examples illustrate response handling, not a new paid generation test. Provider wording, supported assets and billing rules can differ. APIMaster procedures follow its linked current documentation.

FAQ

Does a sensitive-content error mean my API key is broken?

No. A content-review rejection differs from an authentication or model-permission error. Read the actual code before replacing keys or changing account settings.

Will a different Seedance route pass the same rejected request?

There is no such guarantee. Material eligibility, authorization and generation review still apply. Compare route price and capabilities without treating route switching as a content-review fix.

What should I send support?

The model ID, UTC time, full redacted code/message, public task or submission ID, affected media type and final/pending billing status. Never send your API key or publish private source media.