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Records Authority
Category: Archival Management

Accessioning

Also known as: Accession
Simply put

Accessioning is the process by which an archive or repository formally takes in a group of records or materials, records that it has done so, and documents what it has received. In an archival context it typically marks the point at which both physical and legal responsibility for permanent records passes to the receiving repository. The term is also used in unrelated settings such as laboratories, where it refers to receiving and logging samples, so the intended meaning depends on context.

Formal definition

In archival and recordkeeping practice, accessioning is the set of processes through which a repository takes physical and legal custody of a body of records or materials transferred as a unit, and examines, stabilizes, and documents them to establish baseline intellectual and physical control. The term 'accession' may refer either to the act of taking such custody or to the materials transferred to a repository as a unit at a single time. Accessioning commonly follows appraisal and the identification of records for permanent preservation, and it typically involves receiving, documenting, and recording essential information about the materials rather than the fuller arrangement and description carried out during subsequent processing. It should be distinguished from routine retention, from disposition generally, and from destruction; accessioning specifically concerns the transfer and formal accepting of custody, often of records identified as having permanent value. The precise arrangements, including what constitutes transfer of legal custody, depend on the jurisdiction, the governing repository, and applicable policy.

Why it matters

Accessioning establishes the point at which a repository formally accepts responsibility for a body of records, creating the documentary trail that underpins later claims about their provenance, authenticity, and chain of custody. Without a reliable accessioning record, a repository may struggle to demonstrate what it holds, when it was received, and under what terms, which can undermine the evidential value of the materials and complicate access, rights management, and accountability over the long term. Because accessioning typically marks the transfer of both physical and legal custody, it also clarifies who bears responsibility for the records going forward, an important distinction where liability, privacy obligations, or access requirements may otherwise remain ambiguous.

Accessioning matters because it is the foundation on which subsequent archival control is built. It commonly follows appraisal and the identification of records for permanent preservation, and it provides the baseline intellectual and physical control that later arrangement and description depend upon. Establishing this baseline early, at the moment of receipt, helps guard against loss, misidentification, or degradation before fuller processing can occur. It should not be confused with routine retention within an operating organization, with disposition generally, or with destruction; accessioning specifically concerns the formal accepting of custody, often of records judged to have enduring value.

The precise arrangements vary considerably. What constitutes transfer of legal custody, and the terms on which materials are accepted, depend on the jurisdiction, the governing repository, and applicable policy. Professional bodies and national archives have developed guidance intended to promote consistent practice, but organizations should treat accessioning arrangements as something to define explicitly rather than assume, since the responsibilities and formalities involved differ across settings.

Who it's relevant to

Archivists and repository staff
Those responsible for taking in and managing collections rely on accessioning to establish baseline physical and intellectual control over newly received materials. It is often their first formal step in bringing records under repository management, preceding the more detailed arrangement and description carried out during later processing.
Records managers overseeing transfers
Records managers in organizations that transfer permanent records to an archive need to understand accessioning as the point at which custody, and typically legal responsibility, passes to the receiving repository. This helps clarify where responsibility for records ends within the originating organization and where the repository's obligations begin, though the precise arrangements depend on jurisdiction and policy.
Information governance and compliance professionals
For those concerned with accountability and chain of custody, accessioning records provide documented evidence of when materials were received and under what terms. This supports later assurances about provenance, authenticity, and the terms of access or use, which can matter where privacy, rights, or access obligations apply.
Readers encountering the term outside archives
The word 'accessioning' is also used in unrelated settings, notably laboratories, where it refers to receiving, labeling, and documenting samples. Professionals should confirm the intended meaning from context, as the laboratory usage is distinct from the archival sense concerning custody of records.

Inside Accessioning

Transfer of custody
Accessioning typically marks the formal point at which responsibility and control over records pass to an archive or repository. It records that custody, and in some cases ownership or legal rights, has moved from the originating body or donor to the receiving institution, though the precise arrangements depend on organizational policy and any governing agreement.
Documentation and description
The process generally involves creating an accession record that captures essential information about the material received, such as its source, extent, date range, and the conditions of transfer. This documentation supports later intellectual control, arrangement, and description, and helps establish provenance.
Verification against transfer agreements
Accessioning often includes checking the material actually received against what was expected or agreed, confirming quantity, format, and completeness. This step supports the integrity and reliability of the records once they are under the repository's control.
Establishment of provenance and context
By recording the origin of the material and its administrative or personal context, accessioning helps preserve the evidential value of records. Maintaining provenance is central to distinguishing an authoritative record from a decontextualized copy or item of loose information.
Basis for subsequent lifecycle actions
Accessioning commonly represents the point at which material enters the repository as a formal disposition outcome, particularly where disposition takes the form of transfer to an archive rather than destruction. It provides the foundation for later preservation, arrangement, description, and access provision.

Common questions

Answers to the questions practitioners most commonly ask about Accessioning.

Is accessioning the same as simply transferring records into storage?
No. Transfer refers to the movement of records from one custodian, location, or system to another, whereas accessioning is the formal process by which a repository or archive takes records into its custody and control, records that intake, and establishes accountability for them. A transfer may precede accessioning, but accessioning adds the formal acceptance, documentation, and assumption of custodial responsibility. It is possible for records to be transferred without yet being accessioned, and organizational policy and the arrangement between the transferring body and the receiving repository typically determine when each step is considered complete.
Does accessioning mean the records are being permanently preserved or archived?
Not necessarily. Accessioning is the act of taking records into custody and documenting that intake; it does not by itself determine that the records will be permanently preserved. Disposition decisions, which may include permanent preservation, continued retention, transfer, or eventual destruction, are governed separately by retention and disposition arrangements. Depending on the repository and its mandate, accessioned records may be held for a defined period rather than kept permanently. Accessioning establishes control over the material so that subsequent disposition can be applied in an accountable way.
What information is typically captured when records are accessioned?
Accessioning documentation typically records details that establish accountability and enable later management of the material. This often includes the source or transferring body, the date of receipt, a description of the extent and format of the records, and identifiers assigned by the repository. Depending on organizational policy and the repository's practices, it may also capture information relevant to authenticity, provenance, condition, access conditions, and any associated retention or disposition arrangements. The specific fields captured vary by repository and by the systems and standards in use.
How does accessioning support the authenticity and integrity of records?
By formally documenting the point at which records enter custody, including their source and condition, accessioning helps establish an unbroken account of custody and handling that supports later assessments of authenticity, reliability, integrity, and usability. Capturing provenance and intake details at this stage can help demonstrate that records are what they purport to be and have not been altered inappropriately since receipt. The degree of assurance this provides depends on the rigor of the documentation and the controls applied by the repository.
Who is generally responsible for accessioning within an organization?
Responsibility for accessioning typically rests with the repository or archival function that takes the records into custody, though it usually involves cooperation with the transferring body. In many organizations, records managers, archivists, or dedicated custodial staff carry out or oversee accessioning, working within policies that define who may accept records and under what conditions. The precise allocation of responsibility depends on organizational structure, policy, and any agreements governing the transfer and receipt of the records.
How does accessioning relate to appraisal and disposition decisions?
Accessioning is generally concerned with formally taking records into custody and documenting that intake, while appraisal concerns the assessment of records to determine their value and appropriate treatment, and disposition concerns the actions taken as a result, which may include continued retention, transfer, permanent preservation, or destruction. These processes are distinct but connected: appraisal often informs whether and how records are accessioned, and accessioning establishes the control needed to apply disposition decisions in an accountable manner. The sequencing and interaction of these steps depend on organizational policy and the practices of the repository.

Common misconceptions

Accessioning is the same as cataloguing or full description.
Accessioning is typically an initial intake and control step that establishes basic custody and summary information. Detailed arrangement and description usually follow as separate processes, so the accession record is generally a starting point rather than a complete finding aid.
Accessioning simply means physically receiving material into a store.
While it may include physical receipt, accessioning is more fundamentally about formally taking records under intellectual and administrative control, documenting their source and context, and confirming the terms of transfer. Mere physical possession without this documentation does not typically constitute accessioning.
Accessioning and disposition are unrelated, because disposition means destruction.
Disposition is broader than destruction and may include transfer to an archive or permanent preservation. Accessioning is often the receiving side of a disposition action that involves transfer, so the two processes are frequently connected rather than opposed.

Best practices

Create an accession record at the point of intake that captures the source, extent, date range, format, and conditions of transfer, so that provenance and custody are documented from the outset.
Verify the material actually received against any transfer agreement or expected inventory, and document discrepancies, to support the integrity and reliability of the records under the repository's control.
Clarify and record the terms of the transfer, including custody and, where relevant, any rights or access conditions, since these arrangements vary by organizational policy and governing agreement.
Preserve contextual and provenance information during accessioning to maintain the evidential value of records and to keep authoritative records distinguishable from copies or decontextualized information.
Treat accessioning as an initial control step and plan for subsequent arrangement and description as distinct activities rather than expecting the accession record to serve as a complete finding aid.
Where accessioning follows a disposition decision to transfer records, coordinate with the transferring body so that the receiving process aligns with the agreed disposition outcome.