Node States

A node is always associated with a state which indicates its status. Table: Node States lists the states of a node.

Node States

Node States	Description	Graphical Indicator
`Invalid`	Indicates that the node has not been completely defined and is not ready for execution. Most nodes must be connected to be valid. That is, they must have the input defined. A Data node does not need to be connected to be valid.
`Error`	Indicates that the node attempted to run but encountered an error. For nodes that perform several tasks such as build several models, any single failure sets the status of the node to `Error`. You must correct all problems to clear the `Error` state. Any change clears the `Error` state to `Ready`, if the problem is a server runtime failure not attributable to standard specification validations. To find out if the problem is really fixed, run the node.
`Ready`	Indicates that the node is properly defined and is ready for execution. Nodes in `Ready` state are also known as `Valid`.	No graphical indicator
`Complete`	Indicates that the node execution is successfully completed.
`Warning`	Indicates that the node execution is complete but not with the expected result.