Unique Identifier

how can i generate a unique identifier using 1. serial number 2.ID no. and
3. county codes

you can concat() field values
https://opendatakit.org/help/form-design/binding/

To use this as the instanceID for a survey, you would need to edit the XML
generated by XLSForm.

XLSForm automatically supplies a calculate formula in the bind definition
of the instanceID field. Replace that supplied formula with your concat()
formula.

ยทยทยท On Mon, Jul 25, 2016 at 6:38 AM, james macharia wrote:

how can i generate a unique identifier using 1. serial number 2.ID no.
and 3. county codes

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Mitch Sundt
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University of Washington
mitchellsundt@gmail.com