Problem with input validation

[Hernan_da_Silva]

Hello,

I have a problem with one of the forms of my app.
First, i will introduce the model to contextualize:

• Surveys table: store data about surveys (including Instruments used)
• Instruments table: has all the instruments with their info (pulled from another database)
• Instruments used table: instruments used on surveys (1-N relation to surveys, survey can have many instruments used)

The form to add instruments used to the survey works the following way:
User chooses to add one:

Add form opens with a dropdown input that has to be completed by the user with the code that identifies the used instrument:

This dropdown is an enum that takes codes of instruments from instruments table.
When a code is selected, all the data for that instrument pulls into the fields of the current form.

It works perfectly

But fails for no reason when text is large (or at least that seems to be the pattern)

In this example the field “modelo” fails, not sure why, but it happens with other fields.

I checked:

• The same data type in both tables for the fields that have this errors, they are LongText.
• No valid if condition

Any clue what may be the cause?

Thanks!