General::setps

Details

This message is generated when a part assignment is used for the value of an expression other than a symbol.
Part assignments are implemented only for parts of the value of a symbol.
Off[message] switches off the message; On[message] switches it on. For example: Off[General::setps].

The part assignment is for the value of a normal expression rather than for the value of a symbol:

This shows a valid part assignment:

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