Error: Collection was modified; enumeration operation may not execute - when running a constituent merge process

When running a constituent merge process, the process may fail with the error:

Collection was modified; enumeration operation may not execute.

Article Number: 64714

Products:

Blackbaud_CRM

Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.

Environment

Affected Version (from previous KB) 2.93.2034

Resolved Version (from previous KB) 2.93.2034, patch 69 ; 2.94.1524, patch 57

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