Two development teams modified the same record (form, field, business rule, etc.) in different update sets that were created from overlapping baselines, causing conflicting changes when committing. (high likelihood)
An update set was retrieved from another instance where the same records had been modified locally, creating conflicts between remote and local changes. (high likelihood)
A previously committed update set modified records that are also present in the current update set being committed, and the changes are incompatible. (medium likelihood)
Multiple update sets containing the same customization were committed out of sequence, causing version conflicts in the sys_update_xml table. (medium likelihood)
System cloning or data import operations modified records that exist in pending update sets, creating unexpected conflicts during commit. (low likelihood)