Error when passing empty value to airtable field

[niaz_morshed]

Hello everyone,
I have an Airtable setup from where I send a design to Dynamic Mockups, which generates mockups using a predefined template from Airtable. The generated mockups are then sent back to Airtable in a separate field. However, the problem is that if fewer than 10 mockups are generated (e.g., 7 or 5), it sends empty values to the Airtable fields, causing an error. [422] Invalid attachment object for field Mockup#6: {}

How can I prevent empty values from being sent to Airtable? Any suggestions would be greatly appreciated. I have attached the blueprint for reference.

blueprint (7).json (136.9 KB)

[niaz_morshed]

Hi @Jonathan_Escobar , Thanks for the suggestions. I have tried using Basic operator: exist. still getting error.

[Jonathan_Escobar]

Try this
Array length not equal to

[niaz_morshed]

Hi @Jonathan_Escobar,

That didnt work out either but I was able to figure out the solution. using ifempty function in airtable mapping filed resolve my issue.
{{ifempty(20.array[6].data.export_path; emptystring)}}