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Input list length mismatch.

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About the error

Issue: When two lists of different lengths are input into a block. The block can’t run because it is trying to match the two lists together. Applies to:
  • Any block that accepts two or more list inputs
    • Common examples include:
      • Math blocks (ex. Add, Subtract, Divide, Multiply and Pow)
      • Evaluate Field
      • Evaluate Field Gradient
Cause:
  • Lengths of lists are not equal.
  • Unintentional lists of (1) are used with another list input. Open up the input block’s properties to check if it is a list type. It will have (#) in the block name.
Solution:
  • Ensure that the list length of both the operands are the same.
  • If you do have an unintentional list of (1), open up the block properties and drag out the chip that has [0] in the name (typically beneath all other properties). Drag this into the Notebook or directly into another block input.