Verifying Rich Media Header Assets Prior to Template Submission

Validating your rich media header assets is a critical step to ensure your templates pass the approval pipeline without friction. Common pitfalls include using restricted URLs or oversized files, which lead to automatic rejection by the IOSOR validation engine. Confirm that all images are under 5MB and hosted on public links to maintain a high campaign throughput.

Asset Compliance Standards for Rich Templates

Before initiating a template submission, ensure all rich media headers adhere to strict format requirements. IOSOR requires images to be under 5MB and documents to be in PDF format. Non-compliant files trigger immediate rejection, delaying your campaign launch. Always verify that your source URLs are publicly accessible and return a 200 OK status code before attaching them to your template request.

Automated Validation and Pre-flight Checks

The IOSOR console performs automated checks on every header asset. If an image resolution is too high or a document link is broken, the system flags the error during the draft phase. This JIT validation prevents invalid templates from reaching the review gate. Ensure your assets are hosted on secure, reliable infrastructure to avoid intermittent connectivity issues during the verification process.

Managing Prepaid Credits for Template Approval

Template submission requires an active account balance. We maintain a USD 20 prepaid floor to ensure uninterrupted service. For high-volume accounts exceeding USD 1,000/month in spend, our team performs a soft review to optimize throughput. Keep your ledger funded to avoid service suspension during the critical approval window. All template costs are deducted from your balance upon successful channel registration.

Handling E.164 and DLR Requirements

Rich templates must be paired with valid E.164 formatted numbers. Ensure your assigned numbers are correctly configured in the IOSOR dashboard before linking them to a template. Monitor your DLR logs to confirm that the delivery path is clear. If a template is rejected due to header issues, the system will provide a specific error code that you can use to troubleshoot your asset configuration.

Essential Documentation and Compliance Links

To master the template lifecycle, review these technical resources:

• Template catalog before channel Live
• Template review gate and unit class
• Catalog Pilot Week: Live vs Setup After First Workshop

Start with IOSOR

Navigate to the IOSOR Console Template Builder to run pre-flight checks on your media header assets and document URLs. Verify that image payloads remain under the size threshold and document links resolve to clean HTTPS endpoints before submitting to the review gate. Validating asset headers in the draft phase prevents upstream channel delays and keeps your launch timeline on track.

IOSOR takeaway

Pre-validating rich media header assets eliminates silent queue stalls and upstream channel rejections. Verifying file dimensions, strict payload limits, and live HTTPS document URLs prior to submission guarantees that your templates move through the review gate without technical flags.

Do test all media hosting endpoints directly within the console pre-flight suite before requesting approval. Don't submit rich templates using unverified redirect links, expired document hosts, or oversized media files that break pre-submission checks.