O/A meaning in General ?

Answer: What is On Arrival mean?

On Arrival is the eighth studio album released by country music artist Dan Seals. The album reached #13 on the Top Country Albums chart. "Love on Arrival" and "Good Times" were the first two singles which both reached #1 while the last two singles, "Bordertown" and "Water Under the Bridge" only reached #49 and #57, respectively. "Good Times", which was his last #1 single and last Top 40 hit, was originally performed by Sam Cooke. "Made for Lovin' You" was also recorded by Clinton Gregory on his 1990 debut album Music 'n Me, and would later be a Top Ten hit for Doug Stone who released it from his 1992 album From the Heart.

reference

Full Form	Category
Open Account	Business
On Account	Business
Operating As	Business
On Arrival	General
On Admission	Medical
Old Age	Medical