Error message MAN TGA: ZBR 01088-01

Hello together!!! am new here in the forum and have on my for me also new TGA the following error code: ZBD Diagnosis 01088-01 can possibly tell me what this means? and is there possibly in the net or elsewhere lists about the codes? or is it possible to buy them even at the man dealer? …even if this would probably rather be read out every time the vehicle… thank me already in advance for a possible answer!!! greeting!