# Before you sign a CRF or case report book

Before you can sign a CRF, the following conditions must be true:

- The CRF is set up as a signing form.
- You have the right to sign CRFs.
- You are in the same signature group as the CRF.
- No other user in the signature group has already signed the CRF.
- The CRF has at least one entered data item.

Before you can sign a case report book, the following conditions must be true:

- A CRF has been set up as the form used to sign the case report book.
- You have the right to sign a case report book.
- You are in the same signature group as the case report book.
- No other user in the signature group has already signed the case report book.
- At least one data item is entered in the final CRF of the case report book.

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