Description of errors tracked and sent to field staff
| Short messaging service error message | Error definition |
| Duplicate unique identifier | A 15-digit unique identifier duplicates another unique identifier in the data; the identifier is a concatenation of the district code, block code, village code, household number, and structure number. |
| Incorrect birthdate | Child’s birthdate, including date, month, and year, has been incorrectly entered. Birthdate is too recent (less than 11 months since birth) or too old (more than 17 months since birth). |
| Many miscarriages | More than one miscarriage noted for one pregnancy event. |
| Many births | More than two births noted for one pregnancy event. |
| Young age | Respondent reported age is 18 or below. |
| Female condoms | Female condoms use reported despite the fact that they are rare in rural India. |
| Rushed interviews | Surveys taking an abnormally short time to complete based on a machine learning algorithm. |