Symptoms
In the domain service template there are service parameters OwnerContactID, AdminContactID, BillingContactID, TechContactID configured (or one of them), they are set as Required. Under certain configuration an error occurs:
Some fields have erroneous data or need to be filled in.
even though all the requested fields were enetered and passed validation. An error does not prevent an actual order placement.
Cause
Incorrect service parameters configuration. The service parameters *ContactID shall not be required: http://download.pa.parallels.com/pba/5.5/doc/56132.htm ("Do not select the Required check box. The parameter must be optional.")
Resolution
Change the parameter(s) to optional and synchronize the store for changes to apply.