Whether the cantonal social insurance court had subject-matter jurisdiction under Art. 73 LPP over the refund claim for withheld LPP contributions.
The dispute did not specifically concern professional pension law, because the claimant only sought repayment of deductions from salary; the court lacked jurisdiction.
Jurisdiction under Art. 73 LPP requires a dispute whose object and legal basis specifically relate to occupational pension law. Here, the claimant did not assert entitlement to coordinated salary benefits or any pension-law claim, but only a reimbursement claim against the employer for allegedly unauthorized salary deductions.