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There is no restriction in the CSA O86 saying that all shear walls along a shear line have to be constructed of the same material assembly, but as many designers will want to impose such a restriction for practical considerations, there is a Design setting to prohibit dissimilar materials - it imposes the restriction that all walls along a shear line that are designated as shear walls must have the same material design. If you change a material item on one of the shear walls, the same property changes on all the rest.
Non-shear walls:
If you specify that all walls on a line must have the same materials, the non-shear walls on the same shear line and on the same building level must have the same materials as other non-shear walls, but they can be different from the shear walls on the shear line.
Different shear strengths and rigidity
Regardless of the similar materials setting, shear walls along a shearline can have different hold-down configurations and therefore have different hold-down effect factors (Jhd ) so they have different shear strength. They may also have different rigidities, owing to a different Jhd factor, when using capacity-based force distribution. .