Text field flagged as modified, since it does not exist in the Dictionary

What causes this issue?

You wanted to assign the attributes "variable text from Dictionary" to
a text field on the screen.
However, there are no field label texts for the data element or
Dictionary field type.

System Response

The text field on the screen is flagged as modified.

How to fix this error?

Define the appropriate field label texts in the ABAP Dictionary.
If you want to use the heading text, enter '4' in the attribute field.

Error message extract from SAP system. Copyright SAP SE.