我正在使用数据验证在 PDI 中进行转换，但是当我运行转换时出现此错误，谁能帮我修复它：编辑：我确实有那个字段，但它说找不到它。
2021/04/23 21:59:10 - DataValidation - Dispatching started for transformation [DataValidation]
2021/04/23 21:59:11 - Data validator.0 - ERROR (version 9.1.0.0-324, build 9.1.0.0-324 from 2020-09-07 05.09.05 by buildguy) : Unexpected error
2021/04/23 21:59:11 - Data validator.0 - ERROR (version 9.1.0.0-324, build 9.1.0.0-324 from 2020-09-07 05.09.05 by buildguy) : org.pentaho.di.core.exception.KettleStepException:
2021/04/23 21:59:11 - Data validator.0 - Unable to find the specified fieldname 'CREDAT_0' for validation#1
2021/04/23 21:59:11 - Data validator.0 -
2021/04/23 21:59:11 - Data validator.0 - at org.pentaho.di.trans.steps.validator.Validator.processRow(Validator.java:111)
2021/04/23 21:59:11 - Data validator.0 - at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62)
2021/04/23 21:59:11 - Data validator.0 - at java.lang.Thread.run(Thread.java:748)