- 397 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397

Brooke B. Hogan, appellant, v.

Nicholas T. Hogan, appellee. ___ N.W.2d ___ Filed February 12, 2021. No. S-20-254.
1. Child Custody: Jurisdiction: Appeal and Error. The question whether jurisdiction should be exercised under the Uniform Child Custody Jurisdiction and Enforcement Act is entrusted to the discretion of the trial court and is reviewed by an appellate court de novo on the record for abuse of discretion. 2. ____: ____: ____. In considering whether jurisdiction exists under the Uniform Child Custody Jurisdiction and Enforcement Act, a jurisdic

tional question that does not involve a factual dispute is determined by an appellate court as a matter of law, which requires an appellate court to reach a conclusion independent from the trial court. 3. Divorce: Judgments: Appeal and Error. The meaning of a divorce decree presents a question of law, in connection with which an appellate court reaches a conclusion independent of the determination reached by the court below. 4. Child Custody: Jurisdiction. Jurisdiction over a child custody proceed

ing with interstate implications, including one seeking to modify a child custody decision, is governed exclusively by the Uniform Child Custody Jurisdiction and Enforcement Act. 5. ____: ____. Under the Uniform Child Custody Jurisdiction and Enforcement Act, Neb. Rev. Stat. § 43-1239 (Reissue 2016), a state’s exclusive and continuing jurisdiction is relinquished when both parties and the children no longer reside in the state. 6. Jurisdiction: Service of Process. A voluntary appearance of a party is equivalent to service of process for purposes of personal jurisdiction. 7. Jurisdiction: Words and Phrases. Subject matter jurisdiction is the power of a tribunal to hear and determine a case in the general class or category to which the proceedings in question belong and to deal with the general subject matter involved. Nebraska Supreme Court Online Library www.nebraska.gov/apps-courts-epub/ 03/19/2021 09:08 AM CDT- 398 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397

8. Jurisdiction. Parties cannot confer subject matter jurisdiction upon a judicial tribunal by either acquiescence or consent, nor may subject mat

ter jurisdiction be created by waiver, estoppel, consent, or conduct of the parties. 9. Actions: Jurisdiction. Lack of subject matter jurisdiction may be raised at any time by any party or by the court sua sponte. 10. ____: ____. A court action taken without subject matter jurisdiction is void. Appeal from the District Court for Douglas County: Gary B. Randall , Judge. Affirmed. Andrea L. McChesney, of McChesney Family Law Office, for appellant. Dennis G. Whelan, of Slowiaczek Albers, P.C., L.L.O., for appellee.
Heavican , C.J., Miller

- Lerman , Cassel , Stacy , Funke , Papik , and Freudenberg , JJ.
Miller

- Lerman , J. NATURE OF CASE Brooke B. Hogan, appellant, and Nicholas T. Hogan, appel

lee, were divorced in February 2019, in Douglas County, Nebraska. Several months after the decree and parenting plan were entered, Brooke and Nicholas jointly sought permis

sion to move from Nebraska to Arizona, and the district court entered an order modifying the parties’ parenting plan accord

ingly. The parties and the children moved to Arizona. Later the same year, Brooke initiated the present matter when she filed a complaint in the Douglas County District Court to modify the decree and parenting plan, with the ultimate objec

tive of allowing her to move, with the parties’ children, back to Nebraska. Nicholas moved to dismiss Brooke’s complaint to modify the decree, claiming that under Neb. Rev. Stat. § 43-1239(a)(2) (Reissue 2016), of Nebraska’s Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), the district court lacked subject matter jurisdiction because the- 399 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397 parties and children no longer resided in Nebraska. The district court determined that the parties and children did not reside in Nebraska, that it lacked continuing exclusive jurisdiction over the child custody determination, and that proper jurisdiction of the current issue is with Arizona. The district court dismissed Brooke’s complaint to modify. Brooke appeals. We conclude that the district court’s jurisdictional ruling was proper and, in so doing, make no comment on the merits of Brooke’s com

plaint to modify. We affirm.
STATEMENT OF FACTS On February 4, 2019, the district court entered a decree of dissolution of marriage and a parenting plan, which awarded the parties joint legal and physical custody of their minor chil

dren, subject to parenting time set forth in the parenting plan. In April 2019, the parties filed a joint complaint to modify the decree and parenting plan to allow them to move with the children from Nebraska to Arizona. The district court entered the stipulated order. Each party subsequently purchased a home in the Phoenix area, and they moved to Arizona. By the time the children started the school year on August 15, Brooke, Nicholas, and the children were residing in Arizona. On October 22, 2019, Brooke filed a complaint to modify in the Douglas County District Court, seeking a modification of the parenting plan with the ultimate objective of gaining permission to return with the children to Nebraska. In support of her motion, Brooke stated that she and the children had encountered problems transitioning to living in Arizona. She asserted that she and the children have no friends or family in Arizona and struggled to find safe housing and appropri

ate schools. On October 25, 2019, Nicholas entered a voluntary appear

ance and, on October 30, filed a motion to dismiss the com

plaint to modify on the basis that the Nebraska court lacked subject matter jurisdiction under § 43-1239(a)(2). Section 43-1239 provides, in relevant part:- 400 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397 [A] court of this state which has made a child custody determination consistent with section 43-1238 or 43-1240 has exclusive, continuing jurisdiction over the determina

tion until . . . (2) a court of this state or a court of another state determines that the child, the child’s parents, and any person acting as a parent do not presently reside in this state. Brooke claimed that Nebraska retained continuing exclusive jurisdiction because it continued to be the residence, place of domicile, and home state of the children within 6 months before the commencement of the complaint to modify. In support of her claim, she asserted that during the 6 months prior to her complaint, the parties continued to own homes in Nebraska, they had driver’s licenses and registered vehicles in Nebraska, they maintained voter’s rights in Nebraska, and the children were seen by doctors and dentists in Nebraska. However, she admitted that by August 2019, the parties resided in Arizona. Nicholas noted that under § 43-1239(a)(2), because nei

ther the parties nor the children resided in Nebraska when Brooke filed her complaint to modify, jurisdiction was proper in Arizona. Following a hearing, the district court determined that because the parties and the children resided in Arizona when Brooke filed her complaint, Nebraska should relinquish exclu

sive continuing jurisdiction over modifications to the child cus

tody determination. The court specifically noted that Brooke had stipulated to an order approximately 5 months before, showing the parties’ intention to move to Arizona and remain there with the minor children, which order was not appealed. The district court noted that it had conferred with the Maricopa County Superior Court of Arizona to review factors of the UCCJEA and determined that jurisdiction was appropriate in Arizona. On January 9, 2020, the district court granted Nicholas’ motion to dismiss for lack of continuing exclusive jurisdiction under § 43-1239(a)(2) and dismissed Brooke’s- 401 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397 complaint to modify. Brooke unsuccessfully filed a motion to reconsider. Brooke appeals.
ASSIGNMENTS OF ERROR Brooke assigns, summarized and restated, that the district court erred when it dismissed her complaint to modify the decree. She specifically claimed that Nebraska had exclusive continuing jurisdiction (1) under § 43-1239(a)(1) and, fur

ther, (2) because Nicholas conferred jurisdiction on the dis

trict court.
STANDARDS OF REVIEW [1] The question whether jurisdiction should be exercised under the UCCJEA is entrusted to the discretion of the trial court and is reviewed by an appellate court de novo on the record for abuse of discretion. In re Guardianship of S.T. , 300 Neb. 72, 912 N.W.2d 262 (2018). [2] In considering whether jurisdiction exists under the UCCJEA, a jurisdictional question that does not involve a factual dispute is determined by an appellate court as a matter of law, which requires an appellate court to reach a conclu

sion independent from the trial court. In re Guardianship of S.T., supra

. [3] The meaning of a divorce decree presents a question of law, in connection with which an appellate court reaches a conclusion independent of the determination reached by the court below. Braun v. Braun , 306 Neb. 890, 947 N.W.2d 694 (2020).
ANALYSIS Brooke contends that the district court retained continu

ing exclusive jurisdiction to make child custody determina

tions and that it erred when it granted Nicholas’ motion to dismiss and dismissed her complaint to modify the parenting plan. She specifically claimed that (1) due to connections to Nebraska, § 43-1239(a)(1) vested the district court with- 402 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397 continuing exclusive jurisdiction, and (2) Nicholas conferred jurisdiction on the district court by making a voluntary appear

ance and by agreeing to application of Nebraska law. We reject these arguments. § 43-1239 Analysis. [4] Jurisdiction over a child custody proceeding with inter

state implications, including one seeking to modify a child cus

tody decision, is governed exclusively by the UCCJEA. See In re Guardianship of S.T., supra . The purposes of the UCCJEA are to avoid interstate jurisdictional competition and conflict in child custody matters, to promote cooperation between courts of other states so that a custody determination can be rendered in a state best suited to decide the case in the interest of the child, to discourage the use of the interstate system for continu

ing custody controversies, to deter child abductions, to avoid relitigation of custody issues, and to facilitate enforcement of custody orders. Watson v. Watson , 272 Neb. 647, 724 N.W.2d 24 (2006). A Nebraska court which made an initial custody determina

tion applies § 43-1239 to determine whether it has continuing exclusive jurisdiction to modify child custody. Section 43-1239 provides as follows: (a) Except as otherwise provided in section 43-1241, a court of this state which has made a child custody determination consistent with section 43-1238 or 43-1240 has exclusive, continuing jurisdiction over the determina

tion until: (1) a court of this state determines that neither the child, nor the child and one parent, nor the child and a person acting as a parent have a significant connection with this state and that substantial evidence is no longer available in this state concerning the child’s care, protec

tion, training, and personal relationships; or (2) a court of this state or a court of another state deter

mines that the child, the child’s parents, and any person acting as a parent do not presently reside in this state.- 403 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397 (b) A court of this state which has made a child custody determination and does not have exclusive, continuing jurisdiction under this section may modify that determina

tion only if it has jurisdiction to make an initial determi

nation under section 43-1238. [5] Here, because neither the parties nor the children resided in Nebraska at the time of Brooke’s filing, the district court did not err when it found that under § 43-1239(a)(2), Nebraska no longer possessed exclusive, continuing jurisdiction. This is because when the children and the parents have moved away from the issuing state, the issuing state no longer meets the juris

dictional prerequisites of § 43-1239(a). Such was the case here. Nebraska’s exclusive and continuing jurisdiction was relin

quished because both parties and the children no longer reside in the state. See, Watson v. Watson, supra ; § 43-1239(a)(2). The record was undisputed that Brooke, Nicholas, and the children resided in Arizona by August 2019. Brooke made several arguments that their move was so recent that the parties retained a “significant connection” to Nebraska and that, hence, Nebraska retained jurisdiction under § 43-1239(a)(1). In contrast, relying on § 43-1239(a)(2), Nicholas argued that because the parties and children had moved to Arizona, the Nebraska court was no longer the exclusive forum. We agree with Nicholas, as did the district court. The statute is constructed such that jurisdiction may be relinquished based on either § 43-1239(a)(1) or § 43-1239(a)(2). Even assuming that Nebraska could maintain continuing jurisdiction over the child custody determination under § 43-1239(a)(1), the court did not err when it determined it had lost exclusiv

ity under § 43-1239(a)(2). This assignment of error is with

out merit. Subject Matter Jurisdiction. Brooke next contends that Nicholas conferred subject matter jurisdiction on the district court by filing a voluntary appear

ance and, in addition, that he acquiesced to proceedings in Nebraska when he agreed to application of Nebraska law in- 404 - Nebraska Supreme Court Advance Sheets 308 Nebraska Reports HOGAN v . HOGAN Cite as 308 Neb. 397 the parties’ modified stipulated decree and parenting plan. It is axiomatic that parties cannot confer subject matter jurisdic

tion upon a judicial tribunal by consent, and we find no merit to this argument. [6-10] A voluntary appearance of a party is equivalent to service of process for purposes of personal jurisdiction. See Johnson v. Johnson , 282 Neb. 42, 803 N.W.2d 420 (2011). Subject matter jurisdiction is the power of a tribunal to hear and determine a case in the general class or category to which the proceedings in question belong and to deal with the general subject matter involved. J.S. v. Grand Island Public Schools , 297 Neb. 347, 899 N.W.2d 893 (2017). Parties cannot confer subject matter jurisdiction upon a judicial tribunal by either acquiescence or consent, nor may subject matter jurisdiction be created by waiver, estoppel, consent, or conduct of the parties. Id . Lack of subject matter jurisdiction may be raised at any time by any party or by the court sua sponte. Id . A court action taken without subject matter jurisdiction is void. Id

. As we understand Brooke’s argument, she asks this court to ignore the UCCJEA and instead conclude that Nicholas’ vol

untary appearance created exclusive subject matter jurisdiction in the district court for Douglas County. Based on the proposi

tions outlined above, this argument fails. Brooke also claims that Nebraska must retain continuing exclusive jurisdiction because of a provision in the parties’ order of modification and attached parenting plan providing that a move to another state would not “in any way alter exist

ing Nebraska law.” This argument is also unpersuasive. By applying Nebraska’s UCCJEA, the Nebraska court did in fact employ “existing Nebraska law” as anticipated by previous orders. See § 43-1239(a)(2). This argument has no merit.
CONCLUSION For the reasons set forth above, Brooke’s assignments of error are without merit, and accordingly, we affirm. Affirmed.