The XSD Schema related to the layouts of version 2.1.1 of the EFD-Reinf were republished with changes but keeping the same version v2_01_01. Previously downloaded XSD files must be replaced.
The XSD replacement Schema is available for download at: http://sped.rfb.gov.br/arquivo/download/6048
Source: Esquemas XSD da versão 2.1.1 da EFD-Reinf republicados