@Ivan I’m assuming that the above one is the configuration screen.
In your DAC field, since you have provided the PXDefault(), then the system will consider that field as mandatory, hence asterisk (*) symbol appeared on the screen.
If you don’t want that field as mandatory, you can remove the PXDefault for the DAC field.
[PXUIField(DisplayName = "FTP Password")]
[PXDefault()]
[PXRSACryptStringAttribute(255, IsUnicode = true)]
public virtual string FTPPassword { get; set; }
public abstract class fTPPassword : BqlString.Field<fTPPassword> { }