This issue is documented in Constituent Batches where the Sex field was present prior to upgrading to version 7.96, patch 7. Patch 7 contains functionality where Gender has full code table functionality, rather than locking values to Male, Female, and Unknown. When users attempt to remove the Sex field in existing Constituent Batches after upgradeing this error occurs. To resolve users should consider the following:
1. If this is a Batch template recreate the template using the Gender field
2. Update the existing Batch with the Gender field and populate with the appropriate data leaving the Sex field blank
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