The Common European Framework of Reference for Languages (CEFR) was put together by the Council of Europe to set up a system of validation of language ability. The European Language Levels-Self Assessment Grid presents that to have A1 German Language Level, you are confident to say:

Understanding
Listening. I can understand familiar words and very basic phrases concerning myself, my family and immediate concrete surroundings when people speak slowly and clearly.
Reading. I can understand familiar names, words and very simple sentences, for example on notices and posters or in catalogues.

Speaking
Spoken Interaction. I can interact in a simple way provided the other person is prepared to repeat or rephrase things at a slower rate of speech and help me formulate what I'm trying to say. I can ask and answer simple questions in areas of immediate need or on very familiar topics.

Spoken Production. I can use simple phrases and sentences to describe where I live and people I know.

Writing
I can write a short, simple postcard, for example sending holiday greetings. I can fill in forms with personal details, for example entering my name, nationality and address on a hotel registration form.

In visa processing, proof of basic knowledge of the German language refers to A1 German Language Level. You can study the language formally in the school or informally from a personal tutor. The Goethe-Institut in Makati City (Philippines) offers courses and examinations.

Along with other visa processing documents, the A1 Certificate as proof of basic knowledge of the German language is important during the visa application.