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Only 4 form fields could be filled when importing data from FDF to PDF template

We are trying to import data from FDF to PDF we can see only 4 fields getting filled rest is getting ignored. We did numerous tests to find the issue and what we noticed is library is taking into account the field creation order and only first 4 fields that were created gets filled. PDF is created using Acrobat DC Pro. Is thisn due to evaluation licenses? because Aspose mention in their website they give full product for testing purposes.

We have a sample project if you want to see the issue.


Thanks for contacting support.

Can you please share source files along with generated result and sample project to further investigate this issue. Also please share desired result as well.


Here is the test code. Desired result is filling all the fields not just first 4 fields. We want to run in .NET Core Amazon AWS Lambda (Linux)


Thanks for sharing the sample project.

We will surely check it - however, could you please confirm that you are using a valid license while using the API? As per trial version limitation, you can only process 4 elements of any collection. In order to test the API without any restriction, you can use 30-days free temporary license which can be obtained from Aspose website.

Hmm is that so. I thought according to your website you give full version of the package but on trial version just put a water mark saying trial only. Where do i put these license files could you direct me how to intergrate license file? also i have a licenses that was purchased 5/15/2017 Aspose.Pdf for .NET would that work for this one?


You can find mentioned limitations and methods to apply license over following article(s) in the API documentation:

You can use a license file with all the API versions as long as they were released before the subscription expiry date of the .lic file. You can open your license file in any text editor and check the expiry date.