ISPP517 ISPILIB, the image data set, is not allocated. ISPILIB must be preallocated in order for ISPF to download images to your workstation. Images will not display on your panel unless they already exist on your workstation.

Explanation

The image data set was not preallocated. You must preallocate the image data set with the ddname of ISPILIB. ISPF downloads the images to your workstation. Images will not display on your panel unless they already exist on your workstation.