Message mapping editor

Question

in messgae mapping editor, what are the nodes with a "red circle" mean....and what does green colored and red colored circle means,
sometimes i encounter this problem while testing message mapping:
"Check xml instance is valid for source xsd and target-field mapping fulfills requirements of target xsd"
can u detail this

Answer 1

The nodes with a little red-lined circle are the nodes that are marked with max occurrence > 1 (for example, unbounded). That means that these fields can occur repeatedly in the target message.
Green circles mean fields that you have already mapped or that are not necessary to be mapped, they will be created automatically (for fields with 1...1 occurrence in target message).
Grey circles mean fields that you haven't mapped yet, but that are not necessary (optional fields, with min occurrence = 0). In particular, nodes which accept multiple instances (with little red circle) will have gray circle, even if they have min occurrence >= 1. You'll have to pay attention on those.
Red circles mean fields that are obrigatory in target message (for example, fields with min occurrence = 1) but are not mapped yet.
Regards,
Henrique.