com.atlassian.greenhopper.service.rank.RankException: Multiple heads found in rank chain: issueIDs [[12171 r0 no prev n12172], [16271 r0 no prev no next]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.

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via Atlassian JIRA by David Currie [Atlassian], 1 year ago
Multiple heads found in rank chain: issueIDs [[12171 r0 no prev n12172], [16271 r0 no prev no next]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.
via Atlassian JIRA by David Currie [Atlassian], 1 year ago
Multiple heads found in rank chain: issueIDs [[12171 r0 no prev n12172], [16271 r0 no prev no next]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.
via Atlassian JIRA by David Currie [Atlassian], 1 year ago
Multiple heads found in rank chain: issueIDs [[634166 r0 no prev n634164], [631373 r0 no prev n631375]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.
via Atlassian JIRA by David Currie [Atlassian], 1 year ago
Multiple heads found in rank chain: issueIDs [[634166 r0 no prev n634164], [631373 r0 no prev n631375]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.
com.atlassian.greenhopper.service.rank.RankException: Multiple heads found in rank chain: issueIDs [[12171 r0 no prev n12172], [16271 r0 no prev no next]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.
at com.atlassian.greenhopper.service.rank.RankIndexBuilder.validate(RankIndexBuilder.java:166)
at com.atlassian.greenhopper.service.rank.RankIndexBuilder.build(RankIndexBuilder.java:85)
at com.atlassian.greenhopper.service.rank.RankIndexServiceImpl$RankIndexSupplier.get(RankIndexServiceImpl.java:157)
at com.atlassian.greenhopper.service.rank.RankIndexServiceImpl$RankIndexSupplier.get(RankIndexServiceImpl.java:133)
at com.atlassian.greenhopper.service.rank.RankIndexServiceImpl.getIndex(RankIndexServiceImpl.java:130)
at com.atlassian.greenhopper.service.rank.RankIndexServiceImpl.fetchCreate(RankIndexServiceImpl.java:100)
at com.atlassian.greenhopper.service.rank.RankIndexServiceImpl.getIssuePosition(RankIndexServiceImpl.java:70)
at com.atlassian.greenhopper.customfield.rank.RankCFType.getValueFromIssue(RankCFType.java:43)
at com.atlassian.jira.issue.fields.CustomFieldImpl.getValue(CustomFieldImpl.java:386)
at com.atlassian.jira.issue.fields.CustomFieldImpl.hasValue(CustomFieldImpl.java:1192)
at com.atlassian.jira.bulkedit.operation.BulkMoveOperationImpl.setRemovedFields(BulkMoveOperationImpl.java:1060)
at com.atlassian.jira.bulkedit.operation.BulkMoveOperationImpl.finishChooseContext(BulkMoveOperationImpl.java:524)
at com.atlassian.jira.bulkedit.operation.BulkMoveOperationImpl.chooseContextNoValidate(BulkMoveOperationImpl.java:382)
at com.atlassian.jira.bulkedit.operation.BulkMigrateOperation.chooseContextNoValidate(BulkMigrateOperation.java:111)
at com.atlassian.jira.web.action.admin.issuetypes.MigrateIssueTypes.doChooseContext(MigrateIssueTypes.java:81)

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