# rescript get-ncbi-data **URL:** https://forum.qiime2.org/t/rescript-get-ncbi-data/20788 **Category:** Library Support **Tags:** feature-classifier **Created:** [September 18, 2021, 12:05am UTC](https://forum.qiime2.org/t/rescript-get-ncbi-data/20788 "2021-09-18T00:05:09Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![SoilRotifer](https://forum.qiime2.org/user_avatar/forum.qiime2.org/soilrotifer/32/21071_2.png) [@SoilRotifer](https://forum.qiime2.org/u/SoilRotifer) #### Post date: [September 21, 2021, 5:24pm UTC](https://forum.qiime2.org/t/rescript-get-ncbi-data/20788/2 "2021-09-21T17:24:59Z")
Hi @laibinhuang, The help text from `qiime rescript get-ncbi-data --help` should help answer that for you. If you search the forum you'll come across the following helpful threads: > [@RESCRIPT error: Download did not finish. Reason unknown](https://forum.qiime2.org/t/rescript-error-download-did-not-finish-reason-unknown/18928/7): > > @avtober, I forgot to mention that you should be aware that the help text also has other helpful information, e.g.: Please be aware of the NCBI Disclaimer and Copyright notice ([Policies and Disclaimers - NCBI](https://www.ncbi.nlm.nih.gov/home/about/policies/)), particularly "run retrieval scripts on weekends or between 9 pm and 5 am Eastern Time weekdays for any series of more than 100 requests". As a rough guide, if you are downloading more than 125,000 sequences, only run this method at those times... Which could also impact your abil… > [@Error while getting plenty of data from NCBI](https://forum.qiime2.org/t/error-while-getting-plenty-of-data-from-ncbi/17635/3): > > It looks like you figured this out as per: Your next error: can be problematic to figure out. There are many "out of our hands" reasons that fetching data from NCBI can fail: I'd suggest trying to add more selective terms to your query, or try to download in batches. This is a great place to start: Good luck! -Cheers! -Mike --- _[View the full topic](https://forum.qiime2.org/t/rescript-get-ncbi-data/20788)._