We are getting below error while adding task in modern UX in 15.8.1
API-1019: could not process the request due to internal error
Error in app-ca.log
ERROR 2020-08-19 09:12:02,955 [http-nio-80-exec-4] ppm.rest (clarity:USER52:SESSION_NUMBER:PPM_REST_API) Exception processing request for resource [timeEntries], query string [/timesheets/19846002/timeEntries]
We have checked and this error is not related with wbs sequence issue.
User is able to add the task in classic.
Release : 15.8.1
Component : PPM INVESTMENTS, PROJECTS, RESOURCES & NPIO MANAGEMENT
Issue was caused by duplicate entries in the PRCALENDAR table, to resolve it we had to delete duplicates from PRCALENDAR table retaining MAX PRID record.