Not able to update the form to collect data

[sofia_sb]

It appears the following message. Help please

FormLogicError: Could not evaluate: instance(‘S/N/NS’)/root/item, message: Failed to execute ‘evaluate’ on ‘XPathEvaluator’: The string ‘instance(‘S/N/NS’)’ is not a valid XPath expression.

[pruzige]

@sofia_sb

FormLogicError: Could not evaluate: instance(‘S/N/NS’)/root/item, message: Failed to execute ‘evaluate’ on ‘XPathEvaluator’: The string ‘instance(‘S/N/NS’)’ is not a valid XPath expression.

check if you are using curly quotes (‘ and ’) instead of straight quotes (’ and "). Otherwise attach the form to this post

[Kal_Lam]

@sofia_sb, you could always validate your XLSForm through this online validator? The online validator should help you identify any syntax issues that are affecting the form deployment.

This post discussed previously should help you use the online validator.

Unable to deploy Server error 500

@okware_256, all you need to do is follow the steps outlined below: Open online validator. This screen appears as shared below: [Image 1] There press Choose File and upload your XLSForm. Once the XLSForm is uploaded there, press Submit. As soon as you press Submit, you will see something as shown below: [Image 2] Now press Preview in browser. If your XLSForm has issues, you will see errors and will not be able to open your XLSForm in a browser. But if your XLSForm doesn’t have issues, you wi…