Upgrade of 2e to 8.7 completed but cant get into the models

Document ID : KB000123524
Last Modified Date : 16/01/2019
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Issue:
Upgraded from 8.6 to 8.7 but after upgrade i am getting an error message
'HLL Generator programs not found in library list' Message ID . . . . . . : Y2E0080 Severity . . . . . . . : 30 Message type . . . . . : Diagnostic Date sent . . . . . . : 11/12/18 Time sent . . . . . . : 11:25:29 Message . . . . : HLL Generator programs not found in library list. Cause . . . : No HLL generator programs were found in the library list. Recovery . . .: Either (i) Add a library containing HLL generator programs to the library list, or (ii) Install the HLL generator programs in the base product library Y2SY.
Environment:
ibm iseries
Cause:
The reason for the Y2E0080 message is that the client has not installed the Y2SYRPG or Y2SYCBL library
Resolution:
The reason for the Y2E0080 message is that the client has not installed the Y2SYRPG or Y2SYCBL library.
Or perhaps it was restored but it is not in his library list.

the resolution is either merge these libraries back into Y2SY or use YEDTLIBLST on all models to add these libraries.