Centera XAM programming

Hi.

I'm writing web service app (using XAM library) to store data in Centera pool and I have two observations:

1. When I create binding and non binding field in one XSet, query in JCasScript shows two Uid's (EMC Centera binding and nonbinding clips), but query done by XAM job query shows one Uid and I can retrieve all data by this Uid. When my application delete XSet, JCasScript still shows secon (non-binding) Uid and this Uid has infinity retention (-1). Is this normal behaviour ?

2. I created string field with invalid encoding (one char in string field was non UTF8) and XSet was commited without errors, but later I can't open this XSet, there is error -10214 FP_INVALID_XML_ERR. Only what I can do is delete this bad XSet.

Why commit is posssible with invalid data, there is no error checking during save ?

Regards.