What is the conflict between discovery procedures and the parties' constitutional rights?

How have courts dealt with a conflict between discovery procedures and the parties' constitutional rights? (California, United States of America)

Does a procedural error not affecting substantial rights of the parties constitute reversible error? (California, United States of America)

When an arbitration agreement requires the parties to share the costs of arbitration, does the court have jurisdiction to order that party to waive its right to arbitrate the other party's claim? (California, United States of America)

What waiver of appeal rights apply to a criminal defendant who knowingly waives any significant right such as constitutional rights? (California, United States of America)

What is the meaning of "in any court whatever" in article I, section 15 of the California Constitution, which gives a party accused the right to appear and defend in person and with counsel? (California, United States of America)

Does a defendant have a constitutional right to present a defense based on third party culpability evidence that shows only a motive or opportunity to commit a crime? (California, United States of America)

What is the test for determining whether a party to a long-term relationship with another party has a right to receive support payments after the relationship has ended? (California, United States of America)

Does a prosecutor who makes a statement before a jury that touches on one defendant's right to silence and representation constitute a constitutional violation? (California, United States of America)

Is there a conflict of interest in the notice and explanation of a patient's constitutional rights? (California, United States of America)

Is there a constitutional right to seek and enforce a right of equal protection and due process? (California, United States of America)