The catalogue is divided into nine sections by category, with each work assigned a Krebs-WV number (sometimes seen as KrebsWV or KWV in recordings and other sources).
Unassigned numbers were left at the end of each section to accommodate future discoveries or attributions while maintaining the category structure.
A number of anonymous works were listed in the final section (Krebs-WV 9xx) that have been attributed to Krebs but cannot be verified.
The Eight Short Preludes and Fugues, originally attributed to Johann Sebastian Bach as BWV 553–560, were not included in the Krebs-WV.
Friedrich decided not to include the pieces in the catalogue, noting that recent scholarship, including the critical reports submitted for the New Bach Edition, has viewed Krebs's authorship with extreme doubt, and that no new insights on the issue have emerged in recent years.