Sum formula facing SIZE issue

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Solved529 viewsFormulas and FunctionsSIZE Sum

In “GWP PCL” matrix of the enclosed model, I have a formula to sum “GWP” data from another matrix (GWP Data Matrix).
The formula is GWP = sum(summary(GWP Calculations::GWP)) using LOB Aggregates::Reporting LOB as Reporting LOB Types, GWP Data Matrix::Year as Year
But the formula does not work, I get a SIZE issue and I am not able to understand why. I would be grateful for help on this.
Thanks a lot

Answered question

Dear Rich, your answer was great as usual. This works perfectly. A big thank you.

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