When customer tries to patchadd P2P PVC and choose the PVC type as ADSL-IMA, he got an error "Operation failed. Failure cause: The message transmitted by MDP failed."
BMS version V200R011C02B026.
Operation failed. Failure cause: The message transmitted by MDP failed.
Enable the Narrowband service manager process, the error disappeared.
Because the customer is managing BroadBand products only and not managing any narrowband ones, he disabled the narrowband process. The IMA is a multiplexing E1s so it is a narrowband service not broadband, so process related to narrowband must be enabled.
You must know what a process is responsible for before disabling it.