An Error object lets you define a display field to present the Adelia error messages.
Inserting an Error object creates:
1. Either an <adelia:error name="ObjGuiWrd" ... /> tag (icon 
in the layout manager).
In this case, the tag defines an error field exclusively linked to the Adelia object ObjGuiWrd. All errors assigned to this object are displayed in the space defined by the tag.
The errors relating specifically to an Adelia object are listed below:
Errors generated by the PREPARE_MSG MsgId ObjGuiWrd instruction and the ANOMALY, ERROR and WARNING instructions.
Errors generated implicitly in response to consistency controls:
- Invalid value with respect to the Adelia description (type, length and decimals) of the field,
- Invalid value with respect to the keyboard input control applied to the field,
- Invalid value with respect to the edit code or edit word applied to the field,
- Blank value in a field requiring a value (mandatory field).
2. or an <adelia:error name="*STD" .../> tag (icon 
in the layout manager).
This tag defines a non-dedicated error field. All errors that are not explicitly linked to an Adelia object are shown in the space defined by this tag.
In addition, if any errors relating to a specific Adelia object are generated, and no specific error tag exists for that object, the errors will also be displayed in the multipurpose display box.
Important: During the development process for Web applications, we strongly recommend placing a multipurpose field in each HTML page's layout in order to have a clear view of any errors generated when the page is executed.
Click below:
to see an example,
for more information on inserting an error,
for more information on the Adelia Studio 4GL instructions associated with error messages: PREPARE_MSG, SEND_MSG, ANOMALY, ERROR or WARNING.