options such as ALL24Bit in place, which might cause OutofMemoryErrors, or do not allow starting the IMS Java regions at all. 14.1.3 IMS requirements The following steps assume that the IMS Java FMID is installed (SMP/E apply) and the IMS Java Installation Verification Procedure (IVP) has been completed successfully. The IMS system (V8 or later) should be enabled for IMS Java usage. The following is a checklist for the setup that is required to have a development environment for running the sample to access a Web service. However, most of the required setup is available in the IMS System literature, for example, IMS Version 9: IMS Java Guide and Reference, SC18-7821, or IMS Version 7 Java Update, SG24-6536. These are the basic requirements: Define a transaction code for a new transaction or use an existing one. If no generated Program Specification Block (GPSB) is used, a PSB for the transaction is required with LANG=JAVA. For the RACF user ID an OMVS segment is required for HFS access, both for development and runtime.