These acronyms are frequently left undefined in publications: NGO, ICT, IP, PI, SME, PCT, HR, GDP, HE, UNDP.
Can you define all ten? We can't.
Don't assume your readers know the definitions of ANY acronym. Spell each acronym out completely, within parentheses and with the appropriate letters capitalized, the first time it appears in a document: Local authorities worked together with several NGOs (Non-Governmental Organizations) to deal with the crisis.