Diagnosis
One of the following has occurred:

• You are editing a screen element with type input/output field
(template) and have entered a non-allowed character for the firstcharacter of the template (not '_' or '?'.

• You are editing a screen element with table text field (key word) and
have
entered a text containing only underscores '_'
entered '?' as the first element of the text.

System Response
If the text you entered begins with '_' and you are editing a textfield (key word), the system regards the leading underscore asmeaningless and deletes it.
The system then decides the type of the screen element from the firstremaining character:


• '?' Obligatory input/output field


• '_' Input/output field


• Other Text field

The first character that you entered does not correspond to the currenttype of the element.
Since implicit type switching is no longer supported from Release 3.0onwards, the system does not accept your entry.

Procedure
Check your entry. If you really want to change the element type, youneed to delete the element and recreate it.
For pushbuttons and boxes, you can also change the type by setting andresetting the 'Output field' attribute. You do not then need to deleteand recreate the element.