Error creating A/B tests on existing experiences

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, Master
• Fix Version/s: 7.2.10 DXP FP2, 7.2.10.1 DXP SP1, 7.2.X, 7.3.10 DXP GA1, Master
• Component/s: Pages > A/B Testing for Content Pages
• Labels:
  • liferay-dxp-72-sp1
  • liferay-fixpack-dxp-2-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/78935

Steps to reproduce:

1. Install DXP 7.2 GA1
2. Add some pages with experiences
3. Update to DXP 7.2 GA1 SP1
4. Access the pages with experiences
5. Add an A/B test on a existing experience

Expected behavior: no errors occur

Current behavior: an error occur, with error log:

Unexpected response status 400 with response message: {"exception":"org.springframework.web.bind.MethodArgumentNotValidException","path":"/api/1.0/experiments","debugInfo":{"fieldErrors":[{"DXPExperienceId":"may not be empty"}],"errorCount":1},"error":"Bad Request","message":"Validation failed for argument at index 0 in method: public com.liferay.osb.asah.backend.model.Experiment com.liferay.osb.asah.backend.rest.controller.v1.ExperimentsRestController.postExperiment(com.liferay.osb.asah.backend.model.Experiment), with 1 error(s): [Field error in object 'experiment' on field 'DXPExperienceId': rejected value []; codes [NotBlank.experiment.DXPExperienceId,NotBlank.DXPExperienceId,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [experiment.DXPExperienceId,DXPExperienceId]; arguments []; default message [DXPExperienceId]]; default message [may not be empty]] ","status":400,"timestamp":1569580327334}