SAP ABAP Message Class 37 Message Number 564 (Only one of two elements & is in the loop (unable to convert))
Hierarchy
SAP_BASIS (Software Component) SAP Basis Component
   BC-DWB-TOO-SCR (Application Component) Screen Painter
     SCRP (Package) Screen Painter
Attribute
Message class 37  
Short Description Screen Painter    
Message Number 564  
Documentation status       Space: object requires documentation
Authorization check Error Message      
Changed On 20090618   
Message Text
Only one of two elements & is in the loop (unable to convert)
Help Document

In the selected area, which is part of a loop block, you attempted to convert screen fields to checkboxes or radio buttons.
Two screen elements exist for the specified field name - a template (input/output field) and a field text. Of these, one lies inside the loop block and the other outside.

System Response

The conversion was rejected because the field text with a button as graphical element must form a unit and a graphical unit cannot lie partly inside and partly outside a loop.

Procedure

First, give the template or the field text a different name.
If you want to use the text field as a template header (i.e. as a textual explanation for the intended checkbox or radio button), you should prefix the name of the field text with an asterisk ('*').
Fields with names where the only difference is an asterisk as prefix are treated the same at runtime for the F1 help. This means that, when you define F1 documentation for the data element, it becomes effective for the header.

History
Last changed on/by 20140121  SAP 
SAP Release Created in