Hello Nasvil,
Sorry for the late reply!
"HCDP" was the old name that Huawei used in the passed for HCNP-R&S certification, so at the moment you won't find any training or exam information anymore on our website for 'HCDP', this was been replaced already some time ago by 'HCNP-R&S'.
To get HCNP-R&S certification, there are 2 exam options, depending on your situation:
1. Normal way is to pass the 3 required exams in routing (IERN), switching (IESN) and network performance (IENP). The Prometric exam codes are respectively: H12-221, H12-222 and H12-223.
More information, including training material downloads to prepare for the 3 exams can be found on our website here: http://support.huawei.com/learning/Certificate!showCertificate?pbiPath=term1000025451&id=Node1000004605
2. For engineers that already have a valid, equivalent level or higher level certification from another vendor (for example Cisco CCNP or CCIE), there is the possiblity to take 1 fast track exam to achieve HCNP-R&S certification. Prometric exam code H12-224.
Please note that the fast track exam is ONLY allowed for engineers that meet the requirement of having equivalent level or higher level certification from another vendor (you will be asked to sent proof of this upon applying for your certification!). If you don't meet this requirement, then take the 3 regular exams to get HCNP-R&S certification.
Hope this answer is clear and complete.