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Read in Recommended support checks about practises used at ECMWF which could be of help. Some examples and source codes are also available there.

Support checks (on provider's end)

Organisation	Data acquisition method	Data transfer check	Data delay check	Data completeness check	Data quality check	Data recovery option
Organisation	Data acquisition method	Data transfer check	Data delay check	Data completeness check	Data quality check	Exists?	Time limit?
BoM (ammc)	sftp	YES	YES	YES	NO	YES	NO
CMA (babj)	ftp
CPTEC (sbsj)	http
DWD (edzw)	sftp
ECCC (cwao)	sftp (ssh key)	YES	YES
ECMWF (ecmf)	MARS retrieval	N/A	YES	YES	YES	YES	NO
IMD (vabb)	ftp	YES	YES	YES	NO	YES	NO
JMA (rjtd)	http
KMA (rksl)	push (dedicated line via ECPDS)	YES (?)	NO	YES	NO
Meteo-France (lfpw)	ftp
UKMO (egrr)	copy from ecgb
NCEP (kwbc)	ftp
NCMRWF (dems)	ftp	YES	YES	YES	NO	YES	NO

Data acquisition method: If not specified the data retrieval method is pull by ECMWF's acquisition system ECPDS from the provider's location
Data transfer check: Is the data transfer checked to avoid any technical issues on the way from provider's location to ECMWF's premises? Was the data delivered bit identical?
Data delay check: Is the potential delay of data availability checked on the provider's side?
Data completeness check: Is the data content (number of expected fields; reference field list etc) checked on the provider's side?
Data quality check: Is there any data quality control to avoid e.g. unrealistic parameter values due to interpolation or any other kind of error either scientific or technical?
Not simple packing? The data should be packed using GRIB simple packing for faster processing by users (HW packing is used to archive the data)
Data recovery option: Is it possible to recover any missing/corrupted data when needed?
- If yes, is there any time limit when the data can be rescued? If yes, specify number of days within which the recovery action must happen.

Number of operational incidents since May 2018

Number of operational system updates since 2019

Year	2019	2020	2021	2022
created/updated	4	8	13	15*