data

`INVALID_OR_NULL_FOR_RESTRICTED_PICKLIST`

Apex September 14, 2026 4 min

`DUPLICATE_VALUE`on upsert

Apex September 14, 2026 4 min

Designing external IDs before you migrate

Data September 13, 2026 4 min

Changing picklist values when records use them

Data September 13, 2026 4 min

Changing a field type on populated data

Data September 12, 2026 4 min

Test data factories that survive a schema change

Apex September 12, 2026 4 min

Dates, times, and time zones in Apex

Apex September 11, 2026 4 min