<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><p class="MsoNormal" style="-webkit-text-size-adjust: auto; margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span lang="EN-US">Dear Ensembl Developers,<o:p></o:p></span></p><p class="MsoNormal" style="-webkit-text-size-adjust: auto; margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span lang="EN-US"> </span></p><p class="MsoNormal" style="-webkit-text-size-adjust: auto; margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span lang="EN-US">I’m using VEP REST services for annotations with the python package requests and am receiving a lot of ERROR 503 for about one week now. They occur only for GRCh37 as far as I noticed. If I refresh the request for a couple of times without changing any parameters, at some point I get the expected results. This is a little unreliable. Is this a misuse of the service from my side or is there some problem on yours?<o:p></o:p></span></p><p class="MsoNormal" style="-webkit-text-size-adjust: auto; margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span lang="EN-US"> </span></p><p class="MsoNormal" style="-webkit-text-size-adjust: auto; margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span lang="EN-US">Best,<o:p></o:p></span></p><p class="MsoNormal" style="-webkit-text-size-adjust: auto; margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span lang="EN-US">Johann</span></p></body></html>