When genealogical data is published on Genealogy Online, various checks are automatically performed. The birth, baptism, marriage, divorce, death, cremation and burial data of each person in the publication are checked against each other, in terms of age, also in relation to children and parents. The author of the publication can view the total list of reports. However, the reports are also shown to visitors of the publication. A distinction is made between errors and improbabilities (warnings) . For the improbabilities, it is up to the visitor / author to check the information, it can be incorrect but also good! Genealogy Online publishes all data supplied, it is up to the author / visitor to be critical. The following messages can be displayed: Invalid date The date of death / burial / cremation is before the baptism date / date of birth / marriage date or date of divorce / death The baptism date is before the date of birth The wedding date is before the baptism date / date of birth There is both a date of cremation and burial Age at marriage / divorce was below 16 years or above 90 years Person has become over 100 years old Was already deceased / buried / cremated at baptism / birth of child Was under the age of 16 when child died or was buried / born / cremated / baptized Was older than 60 when child was born The lifespan of a brother / sister with the same name shows overlap ( more info ) Person is an ancestor of himself (ancestor loop) Male / female occurs in relation to the opposite sex Difference in age of partners is more than 30 years Wife / husband is also his cousin Same parent (s) as spouse Wife is his mother / father Tip : Every good pedigree program has a function to check the data in order to detect typing or linking errors that you can correct. Use this function regularly, even before you export your data to GEDCOM for publication.