Primary Key importance

Many JBO Exceptions was raised with me due to having a view object without having a primary key in it, so make sure any view object you create have a primary key.

problem with the format of the Number or BigDecimal in ADF

 if you made a format on a Number or BigDeciaml in the VO like ###,###,###.00  and it doesnot work, then put the property groupingUsed="true" on the af:convertNumber of the input text