My user run Invoice Release program everyday and many times per day. Once there was msg "Not able to allocate objects needed for file SSDL01(logical filename) in library BPCS405CDF(library name) member or program device SSDL01. I checked and could not find any causes. But at that time our system was running CPYF from many business files ,including SSD (physical file of SSDL01) that refered in the error. As I read the restriction of CPYF, it will lock To file (TOFILE) parameter. But my case ,SSD is FROMFILE paratmeter, so it should not be locked. Please anyone help me whether this msg involve with CPYF or not.