XPDL DEFINITION ERROR: Cannot insert value NULL into column 'ProcessCode', table 'WfDBbpmn2.dbo' WfProcess'

[ScottKingLeeds]

When saving the process file, if ProcessCode is empty, the following error is reported：

Cannot insert value NULL into column 'ProcessCode', table 'WfDBbpmn2.dbo' WfProcess'； Column does not allow null values. Update failed. The statement has been terminated.

at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, TaskCompletionSource1 completion, Int32 timeout, Task& task, Boolean asyncWrite, String method) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource1 completion, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite, String methodName) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at Dapper.SqlMapper.ExecuteCommand(IDbConnection cnn, CommandDefinition& command, Action2 paramReader) in D:\Cloud365\GitHomeCore\SfBpmn2\source\lib\Dapper\SqlMapper.cs:line 3431 at Dapper.SqlMapper.ExecuteImpl(IDbConnection cnn, CommandDefinition& command) in D:\Cloud365\GitHomeCore\SfBpmn2\source\lib\Dapper\SqlMapper.cs:line 1376 at Dapper.SqlMapper.Execute(IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Nullable1 commandTimeout, Nullable1 commandType) in D:\Cloud365\GitHomeCore\SfBpmn2\source\lib\Dapper\SqlMapper.cs:line 1251 at DapperExtensions.DapperImplementor.Update[T](IDbConnection connection, T entity, IDbTransaction transaction, Nullable1 commandTimeout) in D:\Cloud365\GitHomeCore\SfBpmn2\source\lib\Dapper\Extensions\DapperImplementor.cs:line 141 at DapperExtensions.DapperExtensions.Update[T](IDbConnection connection, T entity, IDbTransaction transaction, Nullable`1 commandTimeout) in D:\Cloud365\GitHomeCore\SfBpmn2\source\lib\Dapper\Extensions\DapperExtensions.cs:line 167 at Slickflow.Data.Repository.Update[T](IDbConnection conn, T entity, IDbTransaction transaction) in D:\Cloud365\GitHomeCore\SfBpmn2\source\Lib\Slickflow.Data\Repository.cs:line 758 at Slickflow.Engine.Business.Manager.ProcessManager.SaveProcessFileSingle(ProcessFileEntity entity) in D:\Cloud365\GitHomeCore\SfBpmn2\source\Lib\Slickflow.Engine\Business\Manager\ProcessManager.cs:line 838