IBM BPM, V8.0.1, All platforms > Troubleshooting and support > Troubleshooting administration tasks and tools > Troubleshooting BPEL processes and human tasks > Troubleshooting the execution of BPEL processes
XPath query returns an unexpected value from an array
Using an XPath query to access a member in an array returns an unexpected value.
Reason
A common cause for this problem is assuming that the first element in the array has an index value of zero. In XPath queries in arrays, the first element has the index value one.
Resolution
Check that your use of index values into arrays start with element one.