二开单据重写提交功能报主键冲突案例分析

一、问题描述

二开的单据点击提交时后台报错，报错信息为主键冲突

com.kingdee.bos.dao.ormapping.SQLAccessException: create data error.ERROR: duplicate key value violates unique constraint "cpk_ppp_pppploc09p"

  Detail: Key (fid)=(lK++aRWyThiBuv1bupLo8VbjnIk=) already exists.

Caused exception message is: ERROR: duplicate key value violates unique constraint "cpk_ppp_pppploc09p"

  Detail: Key (fid)=(lK++aRWyThiBuv1bupLo8VbjnIk=) already exists.

错误详细堆栈信息：org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique