#### Problem description
For some reason Bloomberg is telling me that the field does not apply to CO1 COMDTY anymore which is strange as it worked yesterday. Does anyone have any idea why?
errorInfo = {
source = "19390:rsfrdsvc-slow1"
code = 9
category = "BAD_FLD"
message = "Field not applicable to security"
subcategory = "NOT_APPLICABLE_TO_REF_DATA"
#### Expected Output
#### Version Information
[paste the output of ``pdblp.__version__`` here below this line]
errorInfo = {
source = "19390:rsfrdsvc-slow1"
code = 9
category = "BAD_FLD"
message = "Field not applicable to security"
subcategory = "NOT_APPLICABLE_TO_REF_DATA"
Code Sample, a copy-pastable example if possible
Import the pdblp wrapper
import pdblp
Create a BCon object
con = pdblp.BCon(debug=True, port=8194, timeout=5000) con.start()
Fetch the Options Chain from Bloomberg and print it out
OPTChain = con.bulkref('CO1 COMDTY', flds='OPT_CHAIN') print(OPTChain)