dazugehörig
associated
Belonging to something; connected with something or being part of it.
Bitte bringen Sie das Antragsformular und alle dazugehörigen Unterlagen mit.
Please bring the application form and all associated documents with you.

associated / corresponding
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associated
Belonging to something; connected with something or being part of it.
Bitte bringen Sie das Antragsformular und alle dazugehörigen Unterlagen mit.
Please bring the application form and all associated documents with you.

The word consists of 'dazu' (to it / with it) and 'gehörig' (belonging, from 'gehören' — to belong). It literally means 'belonging to it' and always refers to something that was mentioned earlier.
Sie kaufte ein neues Handy und die dazugehörige Hülle.
She bought a new phone and the associated case.
'Dazugehörig' (associated / corresponding) always needs a clear reference point in the sentence or context. The 'da-' in 'dazugehörig' works like a pointing finger indicating the main object.
Zuerst lesen Sie den Vertrag, dann unterschreiben Sie das dazugehörige Formular.
First read the contract, then sign the corresponding form.
This adjective is very often used in connection with documents, accessories, or parts. Typical nouns are 'Unterlagen' (documents), 'Anleitung' (instructions), 'Kabel' (cable), or 'Software' (software).
Ich habe das Gerät, aber das dazugehörige Ladekabel ist verschwunden.
I have the device, but the associated charging cable has disappeared.
corresponding / according
'entsprechend' and 'dazugehörig' can both express that something fits with something or is connected to it. But 'dazugehörig' mainly means that something really belongs to a group, a set, or an area. 'entsprechend' is broader and means more that something is suitable or appropriate to a situation. Learners may confuse the words when something both fits and belongs to something. If you mean ownership or being part of a whole, 'dazugehörig' is more precise. If you mean appropriateness or a suitable response, 'entsprechend' is more natural.

Ich habe den Schlüssel gefunden, aber die dazugehörige Tasche fehlt noch.
I found the key, but the corresponding bag is still missing.
Bei schlechtem Wetter tragen die Kinder entsprechende Kleidung.
In bad weather, the children wear appropriate clothing.