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Rules for freezing and locking

When you freeze or lock a form or case report book, the following rules are in place:

Rules for freezing and locking

Activity allowed?

Frozen CRF

Frozen case report book

Locked CRF

Locked case report book

Add/update subject data

No unless allowed.*

No unless allowed.*

No

No

Add/update comments

No unless allowed.*

No unless allowed.*

No

No

Open queries

Yes

Yes

No

No

Answer queries

Yes, but can only change data value only if allowed.*

Yes, but can only change data value only if allowed.*

No

No

Close queries

Yes

Yes

No

No

Mark SV ready

Yes

Yes

No

No

Source verify

Yes

Yes

No

No

Sign CRF

Yes

Yes

Yes

Yes

Sign case report book

Yes

Yes

Yes

Yes

* Sponsor users can perform this activity only if the study has been configured to allow sponsor users to update forms after they are frozen.

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