Content upload fails in learning module after cloud migration with file size errors

HCM UKG Pro
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1

After migrating to UKG Pro cloud, we’re unable to upload SCORM course content to the learning module. The uploads consistently fail with file size and MIME type errors, even though the same content packages uploaded successfully in our on-prem environment. We’re trying to launch a mandatory compliance training course next week and the content upload failures are blocking the entire rollout.

Error messages we’re seeing:


Upload failed: File size exceeds maximum allowed (50MB)
Upload failed: MIME type 'application/zip' not supported
Upload failed: SCORM package validation error

Our SCORM packages are typically 80-120MB (video-heavy training modules) and were never an issue on-prem. Are the file size limits and MIME type restrictions stricter in cloud? We need to get 12 courses uploaded in the next few days.

2

For video-heavy courses, consider using cloud-native video hosting instead of embedding videos in SCORM packages. Upload videos to UKG Pro’s integrated video service (it supports up to 2GB per video), then reference them in your SCORM package via external links. This dramatically reduces package size while maintaining course functionality.

3

Thanks for the suggestions. I tried compressing one SCORM package down to 45MB using better video compression, but it still fails with ‘SCORM package validation error’. The package validates fine in SCORM Cloud testing tool. Is there additional validation in UKG Pro cloud that might be failing?

4

Let me provide a comprehensive solution covering all the file size, MIME type, SCORM validation, and cloud upload restriction issues:

1. File Size Limits in Cloud:

On-Prem Limits:

  • Maximum file size: 500MB (configurable up to 2GB)
  • No concurrent upload limits
  • Server-side processing handled uploads of any duration

Cloud Limits:

  • Maximum file size: 50MB per upload (hard limit)
  • Concurrent uploads: 3 per user
  • Upload timeout: 10 minutes (vs unlimited on-prem)
  • Total content storage: 100GB per tenant (vs unlimited on-prem)

Workaround Strategies:

a) Compress SCORM Packages:

  • Use 7-Zip with ultra compression for .zip files
  • Typical compression: 80MB → 35-40MB
  • Command: `7z a -tzip -mx=9 course.zip scorm_content/ b) Optimize Video Content:
  • Convert videos to H.264 MP4 with lower bitrate
  • Target: 720p @ 1.5Mbps (vs 1080p @ 5Mbps typical)
  • Tools: HandBrake, FFmpeg
  • Typical reduction: 120MB → 40MB

c) Split Large Courses:

  • Divide courses into modules (5-7 lessons per module)
  • Each module as separate SCORM package under 50MB
  • Use course prerequisites to enforce sequential completion

2. MIME Type Validation Requirements:

On-Prem Accepted MIME Types:

  • application/zip
  • application/x-zip-compressed
  • Any compressed format

Cloud Required MIME Types:

  • application/x-scorm (SCORM 1.2)
  • application/vnd.scorm (SCORM 2004)
  • application/zip (only if manifest declares SCORM metadata)

How to Set Correct MIME Type:

Update your SCORM package manifest (imsmanifest.xml):

<manifest xmlns="http://www.imsglobal.org/xsd/imscp_v1p1"
          xmlns:adlcp="http://www.adlnet.org/xsd/adlcp_v1p3">
  <metadata>
    <schema>ADL SCORM</schema>
    <schemaversion>2004 3rd Edition</schemaversion>
  </metadata>
</manifest>

This declares proper SCORM compliance and allows cloud validation to accept the package.

3. SCORM Package Compression Best Practices:

Compression Strategy:

a) Remove Unnecessary Files:

  • Delete source files (.psd, .ai, .fla)
  • Remove debug logs and temp files
  • Eliminate unused assets (images, audio not referenced)
  • Typical space saved: 10-15MB

b) Optimize Images:

  • Convert PNG to WebP (70% smaller, same quality)
  • Compress JPEG to 80% quality
  • Use responsive images (serve smaller versions for mobile)
  • Tool: ImageMagick batch processing

c) Optimize Audio:

  • Convert to MP3 @ 128kbps (vs 320kbps)
  • Use mono for narration (vs stereo)
  • Remove silence at beginning/end
  • Typical reduction: 60%

d) Minify Code:

  • Minify JavaScript files (remove whitespace, comments)
  • Minify CSS files
  • Combine multiple JS/CSS files
  • Tools: UglifyJS, CSSNano

Example Compression Pipeline:


# Pseudocode - SCORM package optimization:
1. Extract SCORM package to temp directory
2. Optimize all video files: convert to H.264 MP4 @ 1.5Mbps
3. Optimize all images: convert PNG to WebP, compress JPEG
4. Minify all JavaScript and CSS files
5. Remove unused assets and temp files
6. Repackage with 7-Zip ultra compression
# Result: Typical 80MB package → 35MB optimized

4. Cloud Upload Restrictions:

Blocked Content Types:

  • Flash (.swf, .flv) - Security risk
  • ActiveX controls - Not supported in cloud
  • Java applets - Deprecated technology
  • Executable files (.exe, .msi) - Security policy
  • Unsigned JavaScript accessing external APIs - XSS prevention

Validation Checks Cloud Performs:

  1. SCORM version compliance (1.2 or 2004 3rd Edition only)
  2. Manifest structure validation (imsmanifest.xml at root)
  3. Schema validation (XML must match SCORM XSD)
  4. Content security scan (malware, blocked file types)
  5. API wrapper validation (SCORM API calls must be standard)

Common Validation Failures:

Issue: Missing imsmanifest.xml

  • Cause: Manifest not at package root level
  • Fix: Ensure manifest is at /imsmanifest.xml, not /content/imsmanifest.xml

Issue: Invalid XML schema

  • Cause: Manifest references outdated SCORM schema
  • Fix: Update schema URLs to current SCORM 2004 3rd Edition schemas

Issue: Unsupported SCORM API calls

  • Cause: Custom API extensions not supported in cloud
  • Fix: Use only standard SCORM API methods (LMSInitialize, LMSGetValue, etc.)

Issue: Flash content detected

  • Cause: Package contains .swf files
  • Fix: Convert Flash to HTML5 using Adobe Animate or Google Swiffy

Complete Solution Steps:

Step 1: Analyze Current SCORM Packages

  • List all packages and their sizes
  • Identify packages > 50MB requiring optimization
  • Check SCORM version (must be 1.2 or 2004 3rd Edition)
  • Scan for Flash content or other blocked file types

Step 2: Optimize Large Packages For each package > 50MB:

a) Extract package contents

b) Optimize videos:

  • Convert to MP4 H.264 @ 1.5Mbps
  • Target 720p resolution c) Optimize images:
  • Convert PNG to WebP
  • Compress JPEG to 80% quality d) Minify JavaScript and CSS

e) Remove unused assets

f) Repackage with 7-Zip ultra compression

Step 3: Validate MIME Type and Manifest

  • Open imsmanifest.xml
  • Verify schema version: SCORM 2004 3rd Edition
  • Ensure manifest at package root
  • Validate XML against SCORM XSD schema

Step 4: Test with UKG SCORM Validator

  • Navigate to: Learning Administration > Content Management > SCORM Validator
  • Upload optimized package
  • Review validation report
  • Fix any errors (schema, API, structure)

Step 5: Upload to Cloud

  • Learning Administration > Content Library > Upload Content
  • Select optimized SCORM package (< 50MB)
  • Wait for upload and processing (2-5 minutes)
  • Verify course appears in catalog

Step 6: Test Course Functionality

  • Assign test course to test user
  • Launch course and verify:
    • Content loads correctly
    • Videos play properly
    • SCORM tracking works (completion, score)
    • Course can be resumed after exit

Alternative Approach for Video-Heavy Courses:

Instead of embedding videos in SCORM packages, use cloud-native video hosting:

Implementation:

  1. Upload videos separately to UKG Pro Video Library (supports up to 2GB per video)
  2. Get video embed URLs from Video Library
  3. Create lightweight SCORM package (< 5MB) with HTML pages
  4. Embed videos using iframe or video tags pointing to Video Library URLs
  5. SCORM package tracks completion based on video view duration

Benefits:

  • SCORM package size: 120MB → 3MB
  • No compression quality loss
  • Better video streaming performance
  • Easier video updates (replace in Video Library without repackaging)

Batch Upload Strategy for 12 Courses:

Week 1 (Days 1-2):

  • Optimize all 12 SCORM packages
  • Validate packages with SCORM validator
  • Upload 6 highest priority courses

Week 1 (Days 3-4):

  • Upload remaining 6 courses
  • Test all courses with pilot user group
  • Fix any issues discovered during testing

Week 1 (Day 5):

  • Final validation of all courses
  • Assign courses to target learner populations
  • Launch compliance training campaign

Monitoring and Troubleshooting:

Enable Upload Logging:

  • System Configuration > Learning Module > Advanced Settings
  • Enable ‘Detailed Upload Logging’
  • Monitor logs: Learning Administration > Upload Logs

Common Upload Errors and Fixes:

Error: ‘File size exceeds maximum’

  • Current size: Check file properties
  • Target size: < 50MB
  • Action: Apply compression and optimization steps above

Error: ‘MIME type not supported’

  • Current MIME: Check HTTP headers during upload
  • Required: application/x-scorm or application/vnd.scorm
  • Action: Update imsmanifest.xml with correct schema declaration

Error: ‘SCORM package validation error’

  • Cause: Manifest structure or schema issues
  • Action: Run SCORM validator, fix reported errors
  • Common fixes: Move manifest to root, update schema URLs, remove Flash content

Error: ‘Upload timeout’

  • Cause: Package too large or slow connection
  • Action: Further compress package or split into smaller modules

Post-Migration Best Practices:

  1. Establish content size guidelines:

    • Target SCORM package size: 30-40MB (buffer for future content)
    • Maximum video length: 15 minutes per module
    • Use cloud video hosting for longer videos

  2. Create content templates:

    • Pre-optimized SCORM templates with correct manifest
    • Standard video/image optimization settings
    • Validated against cloud requirements

  3. Implement content review process:

    • Validate all content before upload
    • Test in sandbox environment first
    • Maintain content size tracking spreadsheet

After implementing these optimization and validation steps, your 12 courses should upload successfully within the 50MB limit. The key is aggressive compression of video/image assets and using cloud-native video hosting for the largest content files.

5

Cloud has much stricter file size limits than on-prem. The default limit is 50MB per upload, whereas on-prem allowed 500MB+. You’ll need to compress your SCORM packages or split large courses into smaller modules.