In the Persons table there is a special report called Data check:

Persons and corresponding events get into this report if:

• Person's age, person's lifespan or parent's age at the moment of their child birth exceeds maximum value
• Parent's age at the moment of their child birth or spouse's age at the moment of marrage is less than minimum value
• Incorrect order of marriages or divorces: for example, two marriages without a divorce between them
• Less than one year between childs' birth, for women.

You can set maximum and minimum values in the report options window: