How To Fix UGMD418 - Field &1: Data conversion is necessary

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN Master Data: Messages

• Message number: 418

• Message text: Field &1: Data conversion is necessary

What causes this issue?

Following a change to the definition of field &V1& it is necessary to
convert the old data for this field before the new attributes can be
activated. This arises, for example, when the following attributes have
been changed:
Conversion exit
Version or time dependency of hierarchies

System Response

You cannot start the application. A data conversion is necessary first.

How to fix this error?

Carry out the required data conversion at field level. To do so, choose
the pushbuttom with the icon @HL@ in the hierarchical detail display at
the level of the &V1& field. If applicable, the system then requests
additional information in a dialog box.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.