6367: Changing the template field TYPE or WIDTH (to a smaller size) can cause irreparable data loss.

Lowering the width of a template field or changing the field type may cause data loss in the template fields for the documents attached to that template. Data loss occurs when the value assigned to a template field exceeds the specified width or when it does not match the newly selected data type.

Tip:  Before proceeding make sure that you will not lose template field data as a result of the structural change to the template.