Where a plaintiff's particulars of claim clearly identify the contract relied upon as a written offer and acceptance, and annexes both documents together with supporting invoices, the particulars of claim are not vague and embarrassing and do disclose a cause of action, even if a contemplated formal written contract was never concluded. A defendant cannot use an exception to claim an impediment from pleading when the contractual documents forming the basis of the claim are clearly identified and annexed, and when the defendant knows the factual position regarding the non-conclusion of a formal contract. Allegations of non-compliance with statutory requirements such as section 116 of the MFMA should be raised as defenses in a plea, not as grounds for exception. The test for exceptions requires the excipient to satisfy the court that no cause of action can be supported on every interpretation of the facts, and courts must avoid an overly technical approach to exceptions.