AWS

InlineDataTooLarge - Inline Data Too Large

Getting an **InlineDataTooLarge** error means you're trying to embed file data directly in the request body, but it exceeds the inline data size limit—for large files, you should use multipart upload or presigned URLs instead of inline embedding. This client-side error (4xx) happens when AWS validates inline data size. Most common when large files are embedded in request bodies, but also appears when inline data exceeds size limits, request body is too large for inline upload, or large files are included directly in requests.

#Common Causes

  • →Identity: IAM policy allows upload but inline size exceeded. Service Control Policy (SCP) enforces inline size limits.
  • →Network: VPC endpoint inline size restrictions. API Gateway payload size limits. Request body too large.
  • →Limits: Inline data exceeds size limit. Request body too large for inline upload. File embedded directly in request. Large file included in request body.

✓Solutions

  1. 1Step 1: Diagnose - Check inline data size: Review request body size. Compare with inline size limits. Check if file is embedded in request. Verify data size.
  2. 2Step 2: Diagnose - Verify upload method: Check if using inline embedding vs multipart. Review if presigned URL should be used. Check upload code/configuration.
  3. 3Step 3: Diagnose - Review size limits: S3 inline data has size limits. Check if file exceeds limit. Verify if multipart should be used instead.
  4. 4Step 4: Fix - Use multipart upload: For large files, use multipart upload: aws s3 cp FILE s3://BUCKET/KEY (automatically uses multipart). Or use s3api create-multipart-upload for manual control.
  5. 5Step 5: Fix - Use presigned URLs: Generate presigned URL: aws s3 presign s3://BUCKET/KEY --expires-in 3600. Upload directly to S3 using presigned URL. Or split large files into smaller chunks.

</>Code Examples

Use Multipart Upload Instead of Inline
1#!/bin/bash
2FILE_PATH="large-file.zip"
3BUCKET_NAME="my-bucket"
4OBJECT_KEY="large-file.zip"
5
6echo "=== Avoid Inline Data for Large Files ==="
7echo "For large files, use multipart upload or presigned URLs"
8echo "Do NOT embed file data directly in request body"
9
10# AWS CLI automatically uses multipart for large files
11echo "\n=== Using AWS CLI (Automatic Multipart) ==="
12aws s3 cp ${FILE_PATH} s3://${BUCKET_NAME}/${OBJECT_KEY}
13
14echo "\n=== Alternative: Generate Presigned URL ==="
15PRESIGNED_URL=$(aws s3 presign s3://${BUCKET_NAME}/${OBJECT_KEY} --expires-in 3600)
16echo "Presigned URL: ${PRESIGNED_URL}"
17echo "Upload directly to S3 using this URL (avoids inline data)"
Generate Presigned URL for Direct S3 Upload
1#!/bin/bash
2BUCKET_NAME="my-bucket"
3OBJECT_KEY="uploaded-file.zip"
4EXPIRES_IN=3600  # 1 hour
5
6echo "=== Generating Presigned URL ==="
7echo "This allows direct upload to S3 without inline data"
8
9# Generate presigned PUT URL
10PRESIGNED_URL=$(aws s3 presign s3://${BUCKET_NAME}/${OBJECT_KEY} \
11  --expires-in ${EXPIRES_IN} \
12  --method PUT)
13
14echo "Presigned URL: ${PRESIGNED_URL}"
15echo "\n=== Upload Using Presigned URL ==="
16echo "curl -X PUT -T file.zip '${PRESIGNED_URL}'"
17echo ""
18echo "This avoids InlineDataTooLarge by uploading directly to S3"
19echo "No inline data in your application request"

↗Related Errors

EntityTooLargeRequestEntityTooLarge

Provider Information

This error code is specific to AWS services. For more information, refer to the official AWS documentation.

InlineDataTooLarge - Inline Data Too Large | AWS Error Reference | Error Code Reference