In response, we have:

1. Archived the predecessors (reference 2007, 2005 to 2017) by renaming with an "_07" specifier, marking metadata as "discontinued", and segregating in the catalog. 
2. Created one-for-one replacements (ref 2015).
3. Added "changes in valuables" in both nominal and real terms.
4. Refurbished the catalog.

Dataset properties:

• Framework: UN SNA 2008
• Measurements: 
• Millions of Tanzanian shillings at current prices (Mil. TZS) 
• Millions of constant year-2015 Tanzanian shillings (Mil. 2015 TZS)
• Adjustment: Not applicable
• Native frequency: Annual
• Start date: 2012

The series reside in the historical catalog (Tanzania » National accounts » By expenditure) and include, for example:

• NALEGDP_07UA.ITZA  = [DISCONTINUED] National accounts: Expenditure approach - GDP at market prices, (Mil. TZS)
• NACEEXS_07UA.ITZA  = [DISCONTINUED] Export - Services, (Mil. 2007 TZS)
• NACEEXSUA.ITZA     = Export - Services, (Mil. 2015 TZS)
• NALEFCGGUA.ITZA    = Final consumption - Government, (Mil. TZS)

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.