If the following error is encountered when building a DD using the HART DD-IDE:

ERROR 631: METHOD <name> is used by VARIABLE <var_name> as a pre/post read/write action but contains non-scaling built-in routines.

Be aware that FDI-enabled Hosts that support *.fm8 DD files will likely not be able execute or support this DD. This may force an update to the DD in the future. 

DD Developers must acknowledge this risk if they submit a DD which contains User Interface builtins being used in pre/post read/write edit actions.  Include a reference to CR#5139 in the submission Readme.txt file.