ALLOCATE: ISTAT=errorstate values?

Hi, I've been looking for possible error state values from ALLOCATE (..., ISTAT=ErrorState) in the online doc, but couldn't find a description if /=0. Could you respond with a list of values and descriptions? My problem is ==1. Thank you in advance, Johannes

State 1 is a simple failure to allocate memory, probably the size value is too large.

The only other state is 2 and this corresponds to an invalid argument.