Every entry in the Defense records system exists because some decision needed a documented basis, and DD Form 2490-40 is one of those instruments: Network Planning and Configuration Data - Call Inhibit Lists Worksheet, created to Network Planning and Configuration Data - Call Inhibit Lists Worksheet. The reason it carries a DD number rather than a service designation is structural — the Department maintains a single body of forms for matters that arise identically in every service, so that a record created in one component remains intelligible in another.
That decision has consequences you will notice. Because not stated prescribes the form for the Department as a whole, and not stated maintains it on the Department's behalf, the same blank passes between the Army, the Navy, the Air Force, the Marine Corps, the Space Force, the Coast Guard when operating under Defense jurisdiction, the defense agencies and the combatant commands without translation. A clerk in one component reads a record created in another and finds the fields where they expect them.
The edition in force is not stated, carried by the publisher as not stated, and edition discipline is stricter on a Department form than most people expect, precisely because supersession happens everywhere at once. There is no interval during which one service still works from the previous layout while another has moved on.
The form is laid out top to bottom in a sequence that reflects how the record will be read, not merely how it was drawn. Identification comes first because everything below it is understood in relation to a named person, unit or transaction; substantive entries follow; certification closes the document because certification attests to what precedes it. Filling out of order tends to produce internal inconsistencies — an entry that made sense before the header was settled and does not afterward.
Before the first entry, compare the date printed on the form face with not stated. This is not bureaucratic fussiness. Editions change field numbering, and a receiving office working from the current layout may look for information where your copy does not put it. On a Department form the exposure is wider than usual: your record may be reviewed by an office in another service entirely, one with no reason to remember what the previous edition looked like.
Fill all of it, marking inapplicable items N/A. A record with gaps cannot later demonstrate whether the gap was a decision or an oversight, which is exactly the ambiguity documentation exists to remove. Dates go in the form's own format — on a document that crosses service lines, an ambiguous date is a real hazard rather than a pedantic one.
Understand what the Privacy Act Statement is doing on the page. It exists because collecting personal data from an individual triggers a duty to explain the collection: under what authority, for what purpose, to whom the information may routinely go, and whether you are obliged to answer. That explanation precedes the fields for the obvious reason — afterwards it is merely a notice, beforehand it is a basis for deciding.
Signature is the point at which a completed form becomes a certification, and the requirement follows from that. On paper it means ink in the designated block; electronically it means a credentialed digital signature, ordinarily applied with a Common Access Card in software that supports it. A name typed into the signature field is data, not an act — it demonstrates nothing about who entered it. The date beside the signature fixes when the certification was made, which is why a signed but undated block is treated as incomplete.
Recurring defects have a pattern to them, and it is mostly the pattern of a record that cannot be relied on: an edition that does not match, gaps that cannot be interpreted, entries that cannot be read after scanning, dates that could mean two things, and a certification nobody executed. For an ambiguous field, read the form's own instruction, then not stated, which controls.
Download the form
Formats available: PDF, across 1 pages and about 200 fields. That several formats coexist is a consequence of scale — the Department cannot standardize the software on every desk that needs this form, so it standardizes the document instead.
The difference between a fillable and a printable pdf is a difference in what the file contains. A fillable release carries an interactive layer: each box is a defined field with a name and a data type, and what you type is stored as data inside the document. A printable release has no such layer — it is an image of the page, and the only place your answers can go is onto paper. The distinction matters downstream, because a Department record often gets scanned and forwarded several times before it reaches its final file, and typed characters survive that chain in a way pen strokes do not.
Xfdl appears in the set for reasons of institutional inertia rather than preference. It is the IBM Lotus Forms format, once the Department's electronic forms standard and deployed widely enough that it outlived the decision to move on. IBM Lotus Forms Viewer or an equivalent client opens it; a pdf application will not.
All of it downloads without charge. Where care is needed is in the reader you choose. A fillable pdf depends on field properties that desktop applications honour and browser previews frequently ignore, so work locally rather than inside a browser window.
What the form asks for
- Press this Reset button to clear the data from all fields.
The completed form goes to the office named in not stated or in local implementing procedure, and it is worth keeping a copy before it goes. On a Department form the destination is frequently outside your own chain — another service, a defense agency, a joint staff — and recovering a document that has crossed an organizational boundary is a slower business than retrieving one from a file down the hall.
Cross-referenced documents are found by series and number, with nothing further required. That the DD sequence is unified across the Department means a cited number identifies one form and no other, which is the practical payoff of centralizing the numbering in the first place.
Procedures that touch both Department and service processes will cite forms from both sequences, and the coincidence of numbers between them is exactly that — coincidence. An Army proponent maintains the DA series for the Army; not stated or another Department office maintains the DD series for the whole Department. Two independent registries, two independent numbering runs, no correspondence at any value.
A form is downstream of the policy that requires it, and revision usually starts there: a directive is reissued, a collection requirement is altered, notice language is updated by statute. The form is republished as a consequence. Since none of that reaches individual users, an archived copy quietly becomes wrong, and verifying not stated each time you download is the whole remedy.
A word on what this page is. It distributes a published Department of Defense document and describes what the document contains and how it is completed. It is not the issuing authority, does not speak for one, and offers no legal advice; nothing written here determines whether a particular submission will be accepted, because that determination belongs entirely to the office receiving it. Questions of applicability, eligibility or procedure go to not stated, to your servicing personnel office, or to the office identified in not stated.
Questions and answers
- What is DD Form 2490-40?
- Network Planning and Configuration Data - Call Inhibit Lists Worksheet
- Which edition is current?
- Not stated by the publisher
- Who is responsible for this form?
- Not stated
- In which formats can it be downloaded?