Our SKU synchronization process using Blue Yonder Luminate’s REST API is failing with duplicate key violations. We’re using the inventory optimization module on version 2022.2 and attempting to upsert SKU master data from our ERP system.
The sync job runs every 4 hours and processes about 15,000 SKUs. About 200-300 SKUs fail each run with ‘Duplicate key constraint violation’ errors, even though we’re using the upsert endpoint which should handle both inserts and updates.
Typical error response:
{
"error": "DUPLICATE_KEY",
"message": "SKU already exists",
"sku": "SKU-10234-A",
"statusCode": 409
}
We’re constructing our API payload with SKU number as the unique identifier, but the upsert logic doesn’t seem to be working correctly. The duplicate key handling appears inconsistent - sometimes the same SKU updates successfully, other times it throws this error. We need proper API error management to handle these edge cases.
Has anyone successfully implemented SKU upsert logic via the Luminate REST API? What’s the correct approach for handling existing records?
From a business perspective, these sync failures are causing significant issues with our inventory optimization runs. When SKU master data is incomplete or outdated, our replenishment calculations are wrong. We’re ending up with stockouts on items that should have been reordered. The API needs to be more resilient, but we also need better error visibility. Can you log which specific SKUs are failing and why? That would help us identify patterns and work with data quality teams to fix upstream issues.
Check if you’re using the correct unique identifier field. The API might be expecting ‘itemId’ instead of ‘skuNumber’ for upsert matching. Also verify your API version - the upsert behavior changed between 2022.1 and 2022.2. You might need to explicitly set the upsert flag in your request header.
The 409 conflict response you’re getting indicates the API is rejecting the upsert because it can’t determine if this is an insert or update operation. This usually happens when your matching criteria doesn’t align with what the API expects. Use GET requests to check if the SKU exists before attempting upsert. If it exists, use PUT with the resource ID. If not, use POST. This explicit approach is more reliable than relying on upsert logic, especially when dealing with high volumes and concurrent requests.