How to Resolve '_POST_FLAT_FILE_INVLOADER_DATA_' Incorrect Template Type Error in Amazon MWS API
How to Resolve ‘POST_FLAT_FILE_INVLOADER_DATA’ Incorrect Template Type Error in Amazon MWS API
Working with Amazon’s Marketplace Web Service (MWS) API can be a daunting task, particularly when faced with errors like '_POST_FLAT_FILE_INVLOADER_DATA_' incorrect template type error. This error typically occurs when you’re trying to submit inventory loader feed to Amazon MWS, and the API is unable to recognize the template type of the feed file.
This article will guide you on how to troubleshoot and resolve this error, ensuring smoother and more efficient operations with your Amazon MWS API.
Understanding ‘POST_FLAT_FILE_INVLOADER_DATA’
Before delving into the solution, it’s essential to understand what _POST_FLAT_FILE_INVLOADER_DATA_ means. It’s one of the feed types provided by Amazon MWS for various operations. In this case, it’s used to upload inventory data to Amazon MWS.
The error message typically reads as follows:
Error Type: Sender, Error Code: InvalidParameterValue, Message: Invalid query string provided - PII_REDACTED is an incorrect template type for the given feed type
Why does this error occur?
The error occurs when the template type of the feed file does not match the expected format. Amazon MWS expects a specific layout and data format for each feed type, and if your feed file doesn’t adhere to these specifications, the API will throw the above error.
How to Resolve the Error
Resolving the '_POST_FLAT_FILE_INVLOADER_DATA_' incorrect template type error involves two steps:
- Verify and correct your feed file format
- Ensure correct feed submission
1. Verify and Correct Your Feed File Format
The first step is to ensure that your feed file is in the correct format as specified by Amazon MWS for _POST_FLAT_FILE_INVLOADER_DATA_. The file should be a flat file (.txt or .csv) and should contain the relevant headers and data in the correct order.
"item-name","item-description","listing-id","seller-sku","price","quantity"
"Sample Product","This is a sample product","123","ABC","25.99","10"
2. Ensure Correct Feed Submission
After verifying and correcting your feed file format, the next step is to ensure that your feed submission is correctly done. Here’s a sample Python code snippet using the mws package:
from mws import mws
# Initialize the API
access_key = "your-access-key"
secret_key = "your-secret-key"
seller_id = "your-seller-id"
marketplace_id = "your-marketplace-id"
mws_api = mws.Feeds(access_key, secret_key, seller_id)
# Load the feed file
with open('path_to_your_file.txt', 'r') as f:
feed_content = f.read()
# Submit the feed
response = mws_api.submit_feed(feed_content,
feed_type='_POST_FLAT_FILE_INVLOADER_DATA_',
marketplaceids=[marketplace_id])
print(response.original)
Conclusion
The '_POST_FLAT_FILE_INVLOADER_DATA_' incorrect template type error in Amazon MWS API is typically due to a mismatch between the expected and provided feed file format. By ensuring that your feed file adheres to the required format and correctly submitting your feed, you can resolve this error and carry out your operations smoothly.
While working with Amazon MWS can be challenging due to such errors, understanding the underlying issue and knowing how to resolve it can significantly improve your experience and efficiency.
I hope this guide was helpful. If you have any other questions or run into other issues, don’t hesitate to ask. Always remember, understanding the cause is the first step in resolving any error. Keep exploring, keep learning, and don’t let the errors hinder you.
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