On 17 April 2019, the source wrote (citation):
[...] the Venezuelan currency has been removed from the broad basket indices.
In response, we have marked the metadata as discontinued.
The series reside in the historical catalog (Cross-Country Datasets » Bank for International Settlements (BIS) » Effective exchange rates » Daily) and are:
Because catalog locations are subject to change, the upper-right search box on Databuffet.com provides a "find in catalog" mode that accepts a mnemonic.
See also