Details

This message is generated when the indicated part specification does not have the expected form.
Off[message] switches off the message; On[message] switches it on. For example: Off[General::pspec].

Examples

The second argument in Part is not an integer or a list of integers:

Wolfram Language code: Part[{{11, 22}, {33, 44}}, {{2, 2}}]

These examples show valid part specifications:

Wolfram Language code: Part[{{11, 22}, {33, 44}}, 2, 2]

Wolfram Language code: With[{m = {{11, 22}, {33, 44}}}, m[[2, 2]]]

Wolfram Language code: With[{m = {{11, 22}, {33, 44}}}, m[[{1, 2}, 2]]]

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