Error message ENDE082E generated when editing the element.
Hit PF1, it shows ENDE082E The ISPF/PDF EDIT service passed a return code of X'0000000C'
This error is usually caused by the FAIL_ON_LMF_LOCK keyword value in the ISPF Configuration Table. Make sure the value is NO.
Note: this keyword is in the ISPF Configuration Table, not the ENDEVOR ENDICNFG table.
The ISPF Configuration Table is a component of ISPF itself. You can find where it is located by going into ISPF and entering TSO ISPCCONF - this will bring up the ISPF Configuration Utility panel, at the bottom of which is displayed the name of the Current Configuration Table / Keyword File.