Key and consecutive number

The numeric key (50 digits)

The numeric key is the document’s official unique identifier. It follows this structure:


506 15 01 26 003101123456 0010 0001 01 0000000123 4 56789012
└─┬─┘└┬─┘└┬─┘└┬─┘└────┬─────┘└─┬──┘└─┬──┘└┬─┘└──┬─────┘└┬─┘└──┬──┘
country day month year  issuer ID    branch  POS  type  seq. no.  stat  sec. code

Position	Length	Meaning
1–3	3	Country code (506 Costa Rica)
4–9	6	Day, month, year of issuance (DDMMYY)
10–21	12	Issuer’s ID number (padded with zeros)
22–24	3	Headquarters
25–28	4	Point of sale
29–30	2	Document type
31–40	10	Consecutive number
41	1	Situation (1=normal, 2=contingency, 3=no internet)
42–50	9	Random security code

LX CloudPos generates the key automatically. Do not build it from your system — only store it as a reference.

The consecutive number (20 digits)

It is the issuer’s internal portion (positions 22–40 of the key, excluding the country and date codes). Structure:


001 0001 01 0000000123
└┬─┘└─┬──┘└┬─┘└────┬────┘
branch  POS  type  sequential number

The consecutive number increases automatically by document type. Each tenant has its own sequence.

You can use GET /api/v1/consecutivos/proximo to check what the next number will be without consuming it.