The competent authority for the recognition procedure in Germany determine that your
qualifications cannot be fully recognised due to missing qualifications. In such cases, you can attend a qualification programme in Germany in order to acquire the missing theoretical and/or practical skills for instance company training courses, technical training courses, preparatory courses or job-related German language classes. To take part in those programmes, you require a residence permit for the recognition of foreign qualifications.
Some requirements to receive a visa for the recognition of foreign qualifications are the recognition of incomplete theoretical/practical skills, the registration for relevant qualification programme, possess German language skills at a minimum level of A2 and covered living costs for the duration of your stay.