Microsoft Dynamics NAV (Archived)

NAV 2018. Page type web service, field order

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Posted on by Ghetz

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I was wondering how does NAV handle the order of fields in a Page web service.

For example, I'm working with the Sales Order Page, that has the Sales Order SubForm SubPage. Update Method.

When you update a Sales Order Line, and for example you fill in the Item No., some fields like the location code are blanked out. This is one of the problems I'm having. When I update a Sales Line, the location code is empty.

How do I ensure that Location code is filled in, only after the No. field is validated? In what order does the Page web service validate the fields?

On conclusion, when updating a Sales Line from using a Page web service, the Location Code is blank. I need to avoid this.

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Suresh Kulla 44,614 on at

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RE: NAV 2018. Page type web service, field order

Ghetz,

The NAV Webservice will validate the fields based on the order you have listed on the page. For example if the location code is after No. then it will override after the No. Validate if there is any logic in the Validate to populate the Location Code.

It executes the validation logic on the Table/Page but the sequence is followed based on your page. I have encountered this issue recently and have to arrange the fields on the page to avoid overriding other field value.
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Stefano Demiliani 37,162 Most Valuable Professional on at

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RE: NAV 2018. Page type web service, field order

The NAV web service executes the business logic defined on NAV (C/AL), so it's here were you have to check or debug. I think that the location code is blank because you don't have a location code set in the Sales Header or associated to the Item card.