In response, we have marked the series as "discontinued" in their metadata and segregated in the catalog. 

Dataset properties:

• Measurement: Thousands of euros (Ths. EUR)
• Seasonal adjustment: Not applicable
• Geo coverage: Country, all 12 NUTS 2 areas
• Native frequency: Annual
• Date range: 2015

The series reside in the historical catalog (Netherlands » Income » Household income) and include, for example:

• LWLTIHPUA.INLD      = [DISCONTINUED] Gross income in private households, (Ths. EUR)
• LWLTIDSHPUA.INLD_ZH = [DISCONTINUED] Disposable income in private households - for NUTS 2 Noord-Nederland

The source recommends "average disposable income" as a substitute. Geo coverage is the country, all four NUTS 1, all 12 NUTS 2, and all 40 NUTS 3 areas. The series start at 2001.

• LWLTAIDSHPUA.INLD   = Average Disposable Income in Private Households - Total, (Ths. EUR)

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.