Webflow Collection Item Creation Errors: Troubleshooting Guide

Hi Team, I'm facing an issue—when I run 10 rows, only 4 successfully create collection items in Webflow, while 6 return an 'item not created' error. what will be the problem. Table link - https://app.clay.com/workspaces/607415/workbooks/wb_0swm2cmn7CyFfFkmHCB/tables/t_0swm2czrRHw5uy5J2cd/views/gv_0swm2d0fg4CFTGXDQFw

11 comments

Channeled
APP
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There could be several reasons why only 4 out of 10 rows are successfully creating Webflow collection items. Here are some potential issues and solutions: 1. Item ID mismatch: Ensure you're using the correct Item ID from a recent 'Get collection item' lookup. 2. Image URL compatibility: Use direct, CORS-enabled image URLs or upload images directly to Webflow. 3. Rich Text/Long Text issues: Remove control characters and unsupported HTML from these fields. 4. API token problems: Verify your Webflow API key is current and has the correct permissions (e.g., CMS read access). 5. Collection ID or slug accuracy: Double-check these are correct and accessible with your token. To troubleshoot, try creating items as drafts first by checking the "Is draft" option in the Clay integration settings. If you need further assistance, please request human support by clicking on "Talk to a person."
Source: Webflow integration | Documentation | Clay University
Bo (.
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Hey, I checked the table you sent and only see two rows—just want to confirm if that’s expected. Are you still seeing the ‘item not created’ error? If so, could you let me know exactly where it’s showing up? Happy to dig in and help.
Vishwa C.
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Hello Bo, I deleted the row which shows the item not created. I will recreate issue for you
Bo (.
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Ok keep us posted! :)
Vishwa C.
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https://app.clay.com/workspaces/607415/workbooks/wb_0swm2cmn7CyFfFkmHCB/tables/t_0swm2czrRHw5uy5J2cd/views/gv_0swm2d0fg4CFTGXDQFw Hi Bo, Can you check the table now. The errors showing up now
Vishwa C.
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Can you please check this ASAP?
Bo (.
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Hey — I checked the table, and the error you’re seeing is a validation issue related to how the data is being sent. Here’s what the error means: ** fieldData.slug must match a specific pattern: it can’t have spaces or special characters — only letters, numbers, underscores, or hyphens. ** The body of the request is missing a required items property. * The request structure doesn’t match the expected schema. To fix it, double-check the data you’re sending — especially the slug field and the request body structure. I Let me know if you want help reviewing the setup.
Vishwa C.
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Thanks, Bo The workflow working fine now. I think clay tech team is working error handling right? Because only "item is not created" error will not help to me or us to debug the workflow. Thank you Bo.
Vishwa C.
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Hi Bo, Can I know why this row failing, full name: "Herbert G." or LinkedIn URL: "linkedin.com/in/herbertghent".
Smit V.
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Hi Vishwa, Jumping in for Bo here. The reason it was not working was because 'Herbet G.' ends with a '.' which is not valid for slug. I fixed that and now it works as expected. Let me know if I can help you with anything else :) - Smit
Vishwa C.
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Thanks Smit for the Help. Now I know what happened there.

Webflow Collection Item Creation Errors: Troubleshooting Guide | Clay