Debug upsert

Posting

{"acceName":["ajda","","èrna"],"coll":{"collNumb":"Ivan Kreft","collDate":null,"collCode":null,"collName":null,"collSite":"Kranj","collInstAddress":null,"collMissId":null,"collSrc":50},"geo":{"latitude":46.2333,"longitude":14.3667,"elevation":357.0,"uncertainty":null,"datum":null,"method":null},"sampStat":500,"ancest":null,"donorCode":null,"donorNumb":"Dr. T. Tajnšek","donorName":null,"otherNumb":["RUS001:106","unknown:106"],"duplSite":null,"storage":null,"acceUrl":null,"remarks":null,"instituteCode":"SVN018","accessionNumber":"SRGB 2080","acquisitionDate":null,"breederCode":null,"origCty":"SVN","taxonomy":{"genus":"Fagopyrum","species":"esculentum","spAuthor":null,"subtaxa":null,"subtAuthor":null}}

fails with

16:27:59,579 qtp1156060786-409  WARN o.g.s.s.c.r.AccessionController:251 - Upsert failed due to: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement data=...
2018-07-15T16:27:59.591979430Z sandbox_server.1.i0duijjbjwbj@genesys3    | org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement