Typically, an eCTD application will cover all dosage forms and strengths of a product. In the Centralised
Procedure, this will be equivalent to all dosage forms and strengths covered by an EMA application number
(e.g. EMEA/H/C/000123). In MRP/DCP, a single eCTD should preferably be used for the full procedure
covered by a procedure number (e.g. SE/H/0014/001-003). However, if an applicant decides not to apply for
all strengths and dosage forms in every member state in the procedure, the possibility of having one eCTD
application per strength/dosage form could be considered but is normally not recommended. Applicants should
carefully consider what an eCTD application should cover before submitting the first sequence, as the choice
could have implications for the workload for the entire lifespan of the product. For example, if the applicant
decides to have one eCTD per strength or dosage form, it is expected that each of these eCTD applications
will be maintained individually, such that submission of a single sequence that covers more than one strength
or dosage form will not be possible. In rare cases where a change is needed, please contact the
NCA/RMS/EMA concerned at an early planning stage.
Note that choosing separate eCTD lifecycles for each strength or form of a national (MRP/DCP/NP) product
will mean in practice that all submissions, including EU PSUR Single Assessment submissions, must be
provided for each eCTD separately in accordance with the chosen dossier structure (for details see Section
4.5).
Also note that a single eCTD cannot cover a product authorised/applied for within an MRP/DCP in some MSs
and within a NP in other MSs. Also, a single eCTD lifecycle cannot cover a product that is nationally authorised
in different MS. I.e, you can never mix an MRP/DCP and an NP product in the same eCTD application nor
different NP products.
2.3 Transitional Arrangements
The specifications mentioned in Section 2.2 above are likely subject to changes and are likely to affect both
eCTD building tools and the applicant’s internal business processes as well as the agencies’ review tools and
processes. Once a new eCTD specification and/or the related validation criteria has been approved, eCTD
building tools will need to be updated accordingly and specific transitional guidance will be provided on each
occasion. However, minor changes that do not change the Document Type Definition (DTD) of the eCTD
specification, but only the text may also be published and would then not affect any tools, but rather the
handling or business process of the eCTD lifecycle.
Please note that it should not be necessary to reformat and resubmit previously submitted applications to
reflect such changes.
2.4 Change to eCTD Format
eCTD is the mandatory format for all electronic submissions referred to in 2.1. If the product dossier was earlier
handled in paper or NeeS format, the next upcoming submission needs to be submitted in eCTD format. This
also includes submissions concerning other ongoing regulatory activities related to that eCTD application (e.g.
responses to questions to ongoing variations), in which case, it will obviously not be possible to use the related
sequence attribute (see section 2.9.5.) correctly since the start of the regulatory activity is not present as an
eCTD sequence to refer to and therefore the validation criterion 14 BP2 will not be met. This should be reflected
in the cover letter.
If the dossier has already been provided in NeeS format, the applicant should submit the new data in eCTD
format starting the lifecycle in accordance with eCTD specifications. The first submission in eCTD format will
normally be sequence 0000, even if sequential numbers were used for the NeeS format. For clarity, the cover
letter should always explicitly state that the submission involves a switch to eCTD format. As the documents
already exist in an electronic format, it would be preferable to first re-send the currently valid documents,
especially module 3, as a baseline eCTD dossier in sequence number 0000 and then the first new regulatory
activity as 0001. Please see Section 2.12 for further information on the content of baseline applications and
the acceptability of scanned documents.
Any historical sequences (e.g. sent to new CMSs within an RUP) should not be technically validated by the
agencies receiving them for the first time, for further details see the ‘CMDh Best Practice Guide on the use of
eCTD in the MRP/DCP’. However, if there are problems with loading or reading the “old” files, the applicant
should assist in solving the technical problems on the sequences to facilitate their use in the “new” NCA , for
example due to mistakes in transmission or creating the submission or problems with the XML, which can be
resolved without affecting future lifecycle.