The rules, by template
Each rule in plain words, its code in brackets. Open one for what to do if your filing fails it. A rule that reads more than one template is listed under the first.
- Market share cannot be negative (v90254_s)Warning
- Number of clients cannot be negative (v90255_s)Warning
- Number of applications from new customersover 1 working day cannot be negative (v90256_s)Warning
- Number of applications from new customersover 7 working days cannot be negative (v90257_s)Warning
- None of the eight values it checks in criticality assessment of economic functions (FUNC 1 PAY).a can be negative (row 0210, v90259_s)Warning
- Market share must be between 0.000001 and 1 (v90332_m)Warning
- None of the eight values it checks in criticality assessment of economic functions (FUNC 1 PAY).a can be negative (row 0240, v903569_s)Warning
- Market share cannot be negative (v90223_s)Warning
- None of the ten values it checks in criticality assessment of economic functions (FUNC 1 CM) can be negative (v90224_s)Warning
- Number of counterparties cannot be negative (v90225_s)Warning
- None of the eight values it checks in criticality assessment of economic functions (FUNC 1 CM) can be negative (v90226_s)Warning
- None of the twelve values it checks in criticality assessment of economic functions (FUNC 1 CM) can be negative (v90227_s)Warning
- Market share must be between 0.000001 and 1 (v90337_m)Warning
Templates with no rule of their own
Rules on other templates can still read them.
- Mapping of core business lines to legal entities (FUNC 3) (Z 07.03)
- Mapping of economic functions to core business lines (FUNC 4) (Z 07.04)
- Relevant Services (Z 08.01)
- Relevant Services – mapping to assets (Z 08.02)
- Relevant Services – mapping to roles (Z 08.03)
- Relevant Services – mapping to critical functions (Z 08.04)
- Relevant Services – mapping to core business lines (Z 08.05)
- FMI Services – Providers and Users (Z 09.01)
- FMI services - Mapping to Critical and Essential FMIs (Z 09.02)
- FMI Services - CCPs- Alternative provider (Z 09.04)
1 rule EBA has switched off
EBA has switched these off, in its 4.2 severity package or since then in its list of validation rules (latest update 12 October 2026): they do not apply to 4.2 filings.
19 rules not run yet
Their EBA formulas need parts of the XBRL formula language Line4 Check does not cover yet. Your authority's validation runs them.
e7512_e, e7513_e, e7514_e, e7515_e, e7783_e, e09342_e, v90333_m, v90334_m, v90335_m, v90336_m, v90339_m, v90340_m, v90341_m, v90346_m, v90347_m, v90348_m, v90349_m, v90350_m, v90351_m
Checks like this one, run at the point of submission, are the first step to real-time supervision. See every return on EBA validation rules in plain words.
