Definition of Regular Way seems different between BASEL III and CRR.

In reporting rows 188/189, template C 47.00, article 429(6) states that "for the purposes of point (e) of paragraph 4 of this Article and Article 429g, ‘regular-way purchase or sale’ means a purchase or a sale of a security under contracts for which the terms require delivery of the security within the period established generally by law or convention in the marketplace concerned".  Point 30 of "Leverage Ratio" in the document "Basel III: Finalising post-crisis reforms" instead points out that "For the purpose of the leverage ratio exposure measure, banks using trade date accounting must reverse out any offsetting between cash receivables for unsettled sales and cash payables for unsettled purchases of financial assets that may be recognised under the applicable accounting framework".  Thus it seems that CRR definition considers only securities, while Basel III uses a wider definition of financial assets.