Every input in a form is checked for validity based on its type. For example, a column of type A Here are examples of commonly-used Invalid inputs can prevent saving data or progressing to the next page in a form. For data changes made through forms or Quick Edit columns in detail views, For updates made through actions,
This means an action won't be blocked due to preexisting invalid values that are unrelated to the action itself. New to expressions and formulas? See also Expressions: The Essentials. Valid_If and dependent drop-downsDependent drop-down menus are a common design pattern in apps that capture input. For example, consider an app like the Lead Tracking template, that asks for a In the sample, there is a separate The Likewise, the Internally, AppSheet creates an expression to capture the allowed set of values for the
Strictly for the expression aficionado, the full underlying AppSheet expression would be: While most app creators will never need to express something this complicated, you could in fact provide this expression as a To learn more about how to create a depending drop-down, watch this video. How to Create Dependent DropDowns (Updated video in description) | AppSheet Troubleshoot "failed Valid_If condition" for EnumList fieldsThe problem occurs when the
For example, the The system automatically converts this
When the server expression system evaluates the Note: We are investigating how to fix this shortcoming in the server expression system. This is more difficult than it seems because we need to fix the problem without breaking customers who may be advertently or inadvertently relying on the current behavior. We are not aware of any way to avoid this problem other than removing the Was this helpful? How can we improve it? |