BLKSIZ512, Block size xxxx rounds to yyyy
GDE/DSE Information: This indicates that an ADD, CHANGE, or TEMPLATE command defined the BLOCKSIZE qualifier equal to xxxx, which is not divisible by 512. GDE adjusted the block size to yyyy, which is the next largest multiple of 512.
Action: If yyyy is not acceptable, modify the BLOCKSIZE qualifier value so that it is divisible by 512.
