public VtiUserExitResult execute() throws VtiExitException {
VtiUserExitScreenField scrPurchOrd = getScreenField("EBELN");
if (scrPurchOrd == null) return new VtiUserExitResult(999, "Failed to initialise EBELN.");
long offEbeln = 0;
try {
offEbeln = getNextNumberFromNumberRange("YSWB_OFFPO");
} catch (VtiExitException ee) {
Log.error("Error creating next Slip No.", ee);
return new VtiUserExitResult(999, "Unable to generate offline Purchase Order.");
}
scrPurchOrd.setFieldValue(Long.toString(offEbeln));
return new VtiUserExitResult();
}
