Error PRO_ELEMENT when using field with extent

[balebob]

We have a Progress table with a few fields that are using extent (about 4 extents for each field with different data format).

When I use PRO_ELEMENT such as shown below:
...,
PRO_ELEMENT("table"."field",1,1),
PRO_ELEMENT("table"."field",2,2),
PRO_ELEMENT("table"."field",3,3),
PRO_ELEMENT("table"."field",4,4),
PRO_ELEMENT("table"."next_+field",1,1),
...

I got the following error:
"The number of failing rows exceeds the maximum specified. TransformCopy Conversion Error: Conversion Error for datatypes on column pair 1 (source 'pro_element(field,1,1)', destination column 'field##1'"

Have any one encounter this error before? Please help and thank you.