Cardinality Error.

[Former Member]

Hi,

I am new to web dynpro and was using a tutorial on:

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/c09fec07-0dab-2a10-dbbe-c9a26bdf...

to learn about select options in web dynpro. However when I execute the application in the browser, I get the following error message.

The following error text was processed in the system IDS : Number of Elements of the Collection of Node SELECTION.1.RANGE Violates the Cardinality.

I have tried various combinations of cardinality (both for the cardinality property and the selection property) for the range node in the view, but nothing seems to work.

Please help.

Mick

[Former Member · Accepted solution]

Hi Mike,

The cardinality for the node RANGE should be 0..N

This indicates that your node element can contain no elements or n number of elements.

This is what we requires in case of select options.

[Former Member · Accepted solution]

Thanks Sidh. It works.

[Former Member]

Hi Mick,

Do the following.

1. Instead of taking nodes seperately in component and view context and map them, use drag-and drop method to map the nodes i.e. drag-anddrop the component node to your view context.

2. check the cardinality 0..N.

Regards,

Anirban

[Former Member]

Hi Mick,

Change the cardinality for the node to 0:n. This means that the node can have any lines of data or no data at all.