How To Fix SWDP_WB_TOOL540 - No primary attribute defined for context node "&1"

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_TOOL - Web Dynpro: Messages for Workbench Tools

• Message number: 540

• Message text: No primary attribute defined for context node "&1"

What causes this issue?

The context node is a multiple node in a configuration controller.

System Response

Each multiple context node in the configuration controller should have a
primary attribute. This is similar to a key in a database table. In the
configuration you must ensure that the content of the primary attribute
is unique. Otherwise the merge algorithm for Customizing will not work
with this configuration. Besides this, elements cannot be deleted.

How to fix this error?

If you have already declared a primary attribute, activate the checkbox
Primary Attribute, or else create a new one that can be used as the
primary attribute.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.