The most likely cause of this is that the SVC that Alchemist is using is not current. To correct this, run ZAADYSVC with PARM='SVCNO=xxx,REFRESH=Y,FORCE=Y'.
If you are still having problems after refreshing the SVC, please contact Cybermation Support.
This Frequently Asked Question applies to all supported releases of ESP Alchemist beginning with 5.*.