There are possible errors, found by RA metrics tests:
1)it's possible to add 2 <archive> elements (maxOccur=1 in xsd)
2)it's possible to add 2 <connection-property> elements with the same "name" attribute
3) it's possible to add an empty <transactionn-support/> element
4) it's possible to add 2 <transactionn-support> elements
5) it's possible to add <transaction-support> element with XATransaction value and just <pool> subelement(instead of <xa-pool>) to the connection definition and vice versa (<transaction-support>LocalTransaction and <xa-pool>)
6) it's possible to set min-pool-size>max-pool-size in <pool> element
7) default value for <wrap-xa-resource> in xsd schema is false, but always set to true after RA creation
8) it's possible to add all <security> subelements together simultaneously(e.g. <application> and <security-domain>) in all possible combinations despite of choose:xsd annotation
9) it's possible to add 2 <security-domain> elements
10) it's possible to add <background-validation-millis> element with a negative value
11) it's possible to add 2 <connection-definition> or <admin-object> elements without class-name attribute set within