The CTAPI General Ledger Journal Transactions web service is modeled after the Solomon Screen: 0101000
The recommended and quickest way to implement is to use the ctDynamicsSL.financial.generalLedger.input.journalTransactions.screen object which contains all necessary objects to create a GL batch transaction.

All necessary pv lookups are available in the service.
Examples:
public Batch[] getBatchesByBatNbr(String batNbr)
public ctDynamicsSL.PJEMPLOY[] getEmployeesByID(String employee)
public ctDynamicsSL.PJCODE[] getLaborClassesByID(String codeValue)
and more...

Contact Catalina for sample application/code for calling this webservice

Programmers Reference for: ctDynamicsSL.financial.generalLedger.input.journalTransactions