INSTALLATION ALLOCATE ERROR can occur when installing a load module on the Host Encyclopedia or z/OS IT.
What to do when the following error occurs:
APPLOAD ALLOCATE ERROR, RC=12
************* INSTALLATION ERROR *************
PRESS ENTER KEY TO CONTINUE.
This is usually an invalid dataset problem that is used in one of the construction libraries or location datasets. Ways to locate invalid dataset when ALLOCATE error occurs are as follows:
RESOLUTION: Remove or correct the library in error and re-run the install.